Дисертації з теми "Melt source"
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Gomez-Ulla, Rubira Alejandra. "Historical eruptions of Lanzarote, Canary Islands : Inference of magma source and melt generation from olivine and its melt inclusions." Thesis, Université Clermont Auvergne (2017-2020), 2018. http://www.theses.fr/2018CLFAC023.
Повний текст джерелаThe study of oceanic island basalts (OIB) reveals the complexity of the mantle, which composition is highly variable. Deciphering the source lithologies and processes involved in the OIB formation is challenging since the magmas are transformed on their way to the surface. This is especially critical at Canary Islands where the lithosphere is thought to be remarkably thick (>110 km Fullea et al., 2015). In order to better constrain the composition of primitive magmas and the plausible mantle lithologies involved, two historical eruptions recorded at Lanzarote island, Timanfaya 1730-1736 and 1824 eruptions have been investigated. Indeed, these two eruptions offer a unique opportunity to investigate the mechanisms of magma generation and composition in the context of mantle heterogeneity. The Timanfaya, 1730-1736 historical eruption emitted magmas that evolved from basanites through alkali basalts, finally reaching tholeiitic compositions at the end of the eruption. In 1824 the last eruption on the island produced extremely volatile-rich basanite. The heterogeneity of the mantle is demonstrated to the extreme in Lanzarote where a single eruption exhibits compositional variations similar to the span of the OIB worldwide. The extreme heterogeneity is systematic from whole rock lava and tephra at eruption scale but amplified at mineral and melt inclusion scale within a single tephra sample of the eruption.The use of trace element concentrations and ratios of olivine (e.g. Ni, Mn, and Ca) are valuable indicators of the mantle source lithology, namely, the fractionation-corrected Ni x (FeO/MgO) and Fe/Mn as probes of olivine absent or present lithologies, often taken as pyroxenite-derived component in mixtures of primary melts. The measured trace element concentrations in olivine from the 1730-1736 and 1824 eruptions reveal variable mantle lithologies involved in the magma generation with time. Higher Ni and lower Mn and Ca contents are expected when melting Ol-free source, such as pyroxenite lithologies. The basanites exhibit the largest variation covering the range of olivine in MORB and OIB worldwide whereas later produced alkali-basalts and tholeites have values typically expected from pyroxenite derived melts. The Fo content decreases systematically with time during the 1730-36 eruption and the proportion of silica-saturated primary melt increased in the parental magma mixture with time. At the end of the eruption, tholeiite magmas crystallized olivine with lower Fo content, whereas those concentrations of Mn and Ca increased together with Ca/Al at relatively uniform Ni x (FeO/MgO) and Fe/Mn, all of which is readily explained by increased decompression melting at slightly lower temperature. The basanite from the eruption that took place in 1824 has olivine with the highest Fo content and trace element variability expanding the range of the Timanfaya basanite. The fact that Lanzarote basanites contain olivine with trace element systematic spanning that of MORB and pyroxenite melt is explained by CO2-flux melting of a lithologically heterogeneous source, generating the diverse compositions. In addition, early reactive porous flow through the depleted oceanic lithosphere and equilibration with harzburgite restite caused Ni depletion of the earliest percolating pyroxenite melt from which olivine crystallized and probably leaving dunite channels. After the channel formation mantle nodules could be brought to the surface. The fact that olivine compositions and basanite magma were reproduced approximately a century later may reflect episodic carbonatic fluxing in the slowly uprising Canarian mantle plume. (...)
Peterman, Kenneth James. "Determination of Oxygen Fugacity using Olivine-Melt Equilibrium: Implications for the Redox States of Mid-Ocean Ridge Basalt and Ocean Island Basalt Mantle Source Regions." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1502803559889083.
Повний текст джерелаSimonetti, Antonio Carleton University Dissertation Earth Sciences. "Comparative Nd, Pb, and Sr isotopic study of alkalic complexes from East Africa and India; implications for mantle source regions, melt dynamics and fluid processes." Ottawa, 1994.
Знайти повний текст джерелаMollex, Gaëlle. "Architecture de la plomberie du volcan carbonatitique Oldoinyo Lengai : nouvelles contraintes sur la source, les transferts hydrothermaux, et la différenciation magmatique dans la chambre active." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0123/document.
Повний текст джерелаThe uniqueness of Oldoinyo Lengai to emit natrocarbonatite lavas makes this volcano a natural laboratory to study the genesis of these magmas. New helium isotopic data permit to assert that the signature of the fumaroles has been constant since 1988 despite the radical morphological change of the summit crater after the last sub-Plinian eruption in 2007-2008. The alternation of the effusive and explosive eruptions does not cause major modifications in the hydrothermal system architecture, which is inferred to be deeply rooted. Cognate xenoliths that were emitted during the eruption in 2007-2008 represent a unique opportunity to document the igneous processes occurring within the active magma chamber. The comparison between the noble gas (helium) isotopic compositions of the active magma chamber and those of the other silicate volcanoes of the Arusha region indicates that both types of magmatism have similar sources, identified as being a typical sub-continental lithospheric mantle, which was previously metasomatized by asthenospheric fluids. Moreover, these isotopic signatures confirm that no crustal contamination has occurred during the magma ascent from the mantle to the surface. Detailed petrographic descriptions coupled to a thermo-barometric approach, and to the determination of volatile solubility models for a phonolite composition, allow us to identify the melt evolution at magma chamber conditions and the storage parameters. These results indicate that the magma injected in 2007 has a phonolitic composition and contains a high amount of volatiles (3.2 wt.% H2O and 1.4 wt.% CO2) as well as a temperature around 1060° C. This magma subsequently evolved in the crustal magma chamber located at 11.5 ± 3.5 km depth until reaching a nephelinite composition and a temperature of 880°C. During the differentiation in the magma chamber, the silicate magma is enriched in calcium, sodium, magnesium and iron, whereas the content of silicate, potassium and aluminum decreases. Our results support previous studies related to this eruption, and are similar to the historical products emitted during the whole volcano history, permitting the suggestion that no major modification in the plumbing system has occurred during the Oldoinyo Lengai evolution. The trace elements (REE, LILE and HFSE) measured in the minerals and melt inclusions reveal a concentration reaching 100 to 1000 times the primitive mantle composition. A preliminary experimental study based on the recharge melt composition (phonolite) and identified magma chamber conditions (P, T) permits to reproduce the immiscibility between silicate and carbonatite liquids, key processes at the origin of the Oldoinyo Lengai carbonatites. The continuation of this experimental study will lead to a better comprehension of the carbonatite genesis, thus improving our understanding of the processes that are responsible for the enrichment in trace elements
Valer, Marina. "Origine et évolution des magmas de l'île de la Réunion : apports de la pétro-géochimie et des inclusions magmatiques." Thesis, Clermont-Ferrand 2, 2016. http://www.theses.fr/2016CLF22775/document.
Повний текст джерелаDespite the isotopic homogeneity of the La Réunion lavas, a petrographic and chemical diversity is observed in the products of the two main volcanoes of the island, le Piton des Neiges and le Piton de la Fournaise. Although the majority of the lavas are transitional basalts which are mainly controlled by olivine fractionation and/or accumulation, some relatively old lavas show petrological and geochemical characteristics that reflect various and relatively complex magmatic conditions, as well as storage and plumbing systems. This is for instance the case of the Plagioclase Ultraphyric-Basalts, basalts from the eccentric ‘adventive’ cones and from the Hudson crater (1998 eruption), on which this works deals with. The petro-geochemical study of the lavas is coupled with the investigation of naturally vitreous or experimentally quenched mineral-hosted melt inclusions, in order to characterize the origin of the magmas and their evolution processes in an oceanic hotspot context. The incompatible trace element ratios of the melt inclusions trapped within early-formed olivine crystals (Fo > 85) from the adventive cones are used to identify the nature of the La Réunion mantle plume source. The results suggest that magmas of the adventive cones originate from chemical source comparable to that of all the La Réunion lavas. This source is intermediate between a primitive-like mantle domain and a depleted one, almost unaffected by recycling processes. Small degrees of melting of this source can explain the enriched trace element concentrations of the melt inclusions. Plagioclase-bearing ultraphyric basalts, which can have up to 35 % millimetre-sized plagioclase crystals, were erupted during some stages of building of the two volcanoes. The compositions of the melt inclusions hosted in the plagioclase macrocrystals (An 84.2-71.7 ) and textural observations of the crystals highlight their inherited character. The parental melts of the crystals mainly evolve by clinopyroxene and plagioclase crystallization. Density contrasts between the phases allow plagioclase segregation by flotation and their accumulation at the top of the chamber. The Plagioclase Ultraphyric-Basalts are derived from the remobilization of this plagioclase-rich accumulation zones, upon input of a new batch of magma. The specific eruption periods of these basalts would correspond to decreases in the magma supply, which promoted plagioclase crystallization. Lava textures of the adventive cones and Hudson crater and their olivine-hosted melt inclusions reflect a complex history of the crystals, and the role of recycling processes in the magma feeding system of the Piton de la Fournaise volcano. The olivine crystals are clearly more magnesian (Fo > 85) than those found in the historical lava ones. The chemical compositions of the lavas show that they correspond for the most part to slightly alkaline basalts, called “Mid-Alkaline Basalts”, which are depleted in CaO and enriched in compatible and incompatible elements. Isotopic and trace element compositions suggest that they have a common origin with the historical lavas, but partial melting degrees are lower for the “Mid-Alkaline Basalts”. Clinopyroxene and plagioclase deep fractionation would explain their formation. All the results suggest that the ascent of deep-seated magma clearly could bypass the central volcanic system
Sorbadère, Fanny. "Apport des inclusions magmatiques et de la fusion expérimentale d'une source mixte péridotite-pyroxénite à l'étude des mécanismes de genèse des magmas d'arc sous-saturés en silice." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2013. http://tel.archives-ouvertes.fr/tel-00814866.
Повний текст джерелаLea, Emma J. "Moving from meat : vegetarianism, beliefs and information sources." Connect to this title online, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phl4335.pdf.
Повний текст джерелаNarciso-Gaytan, Carlos. "Dietary lipid source and vitamin e influence on chicken meat quality and lipid oxidation stability." Thesis, [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2746.
Повний текст джерелаValantin, Muriel. "Fécondation, environnement climatique, équilibre source-puits et qualité du melon cantaloup charentais (cucumis melo L. )." Aix-Marseille 3, 1998. http://www.theses.fr/1998AIX30023.
Повний текст джерелаGennaro, Mimma Emanuela. "Sulfur behavior and redox conditions in Etnean hydrous basalts inferred from melt inclusions and experimental glasses." Thesis, Orléans, 2017. http://www.theses.fr/2017ORLE2005/document.
Повний текст джерелаSulfur is an important volatile component of magmas that presents different oxidation states, depending on the redox conditions and on the phase of occurrence: in silicate melts it is typically dissolved as S⁶⁺ and/or S²⁻ , in the gas phase it occurs principally as SO₂ (S⁴⁺ ) and H₂S (S²⁻). Mount Etna, in which magmatic redox conditions are poorly constrained, is used as a case study to investigate sulfur behavior in hydrous basaltic magmas during magma differentiation and degassing. This research integrates the study of natural olivine-hosted melt inclusions with an experimental study on S solubility in hydrous alkali basalts at magmatic conditions.Experimental results suggest the important control of ƒO₂ on the S abundance in Etnean hydrous magma and its partitioning between fluid and melt phases. Melt inclusions were entrapped at different depths inside the magmatic system (up to ~ 18 km, below crater level). They delineate a continuous differentiation trend, marked by fractional crystallization, from the picritic basalt (FS) toward the most evolved and degassed (2013) basalt. S content in Etnean melt is extremely variable and reaches 4150 ppm in the primitive melt inclusions. XANES Fe³⁺/ΣFe spectra in some glass inclusions, resulted in the generally decreasing of Fe³⁺/ΣFe ratios from the most primitive (FS) to the most evolved (2013) melts. MELTS software confirms that the Fe³⁺/ΣFe decrease is due principally to the melt differentiation process, enhanced to the S degassing at ƒO₂ < NNO+1. Magma reduction, in turn, induces the decrease of the sulfur solubility in the hydrous Etnean basalt, as well as of the sulfide saturation, and may constitute a possible enhancer of S exsolution, triggering the important S degassing observed in the last decades in Mt. Etna
Loe, Erik R. "Influence of source of lipid in cattle finishing diets on growth, carcass characteristics, meat quality, and digestion /." Search for this dissertation online, 2006. http://wwwlib.umi.com/cr/ksu/main.
Повний текст джерелаWatts, Annabelle Monica. "High resolution melt analysis : a novel method for studying the genetic relatedness of Pseudomonas aeruginosa isolates from clinical and environmental sources." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/63094/2/Annabelle_Watts_Thesis.pdf.
Повний текст джерелаSrđan, Stojanović. "KVALITET MESA I MLEKA PODOLSKOG GOVEČETA." Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2013. https://www.cris.uns.ac.rs/record.jsf?recordId=95433&source=NDLTD&language=en.
Повний текст джерелаTowards the objectives of research, we examine the quality of meat and milkof Podolian cattle in the Republic of Serbia.The study included a total of 23 animals, of which 12 cows and 11 steers atthe location in Bačka Topola.Determined by the average body weight of steers the podolian breed, whichwere used in this study was 445,91 kg, with an average dressing percentage ofprimary treatment of 53,64 %.8The mass of the head without the horns, the average was 12,11 kg, a mass ofskin was 39,27 kg. The average weight of internal organs were: kidney with fat4,02 kg, liver 5,00 kg, heart 1,76 kg, lungs 4,88 kg, and spleen 0,86 kg. Determinethe average mass of the left carcass of 121,68 kg, and the right carcass of 120,71kg.The values of qualitative traits that were found in MLD on average were:L*-lightness 34,61, part of a*-red color 20,18, part of b*-yellow color 6,54,cooking loss 44,30 % and water holding 5,52. On average, the water content was75,43 %, total solids content of 24,57 %, protein content 21,32 %, ash content 1,09%, and free fat content of 1,90 %. The determined value of the connective tissueaveraged 1,43 %, while the hydroxy proline content was 0,05 %.The values of qualitative traits that were found in MLD on average were:L*-lightness 35,41, part of a*-red color 20,84, part of b*-yellow color 6,64,cooking loss 46,46 % and water holding 7,30. On average, the water content was75,68 %, total solids content of 24,32 %, protein content 21,02 %, ash content 1,09%, and free fat content of 1,82 %. The determined value of the connective tissueaveraged 0,47 %, while the hydroxy proline content was 0,06 %.By examining the sensory properties of the MLD and the MSM has shownthe following: Intensity of color MLD was 4,1 and 4,0 of MSM. The average valueof the texture MLD was 4,3 and 4,1 of MSM. Marbling MLD averaged 4,0 and 4,3for MSM. The determined average value of tenderness MLD was 4,4 and 5,3 forMSM. Juiciness of MLD averaged a 5,1 in MSM 4,7.The examination of milk traits were found that the average duration oflactation period was 152 days, milk yield on average was 988,00 kg, milk fatcontent 4,24 % and 3,99 % protein content. Comparison of milk production traitsbetween primiparas and older cows showed that the average duration of lactationin primiparas amounted to 148 days, and for older cows 156 days, the amount ofmilk in lactating primiparas was 907 kg, and for older cows 1.056 kg. Milk fatcontent at first calving was 4,23 % and 4,25 % of older cows, while milk proteincontent at first calving was 3,94 % and 4,04 % of older cows.The average values of all the traits of milk production between primiparasand older cows were not significant (p> 0.05).
Mngqi, Sinethemba Census. "Effect of Tenebrio molitor larvae as a protein source on growth performance, carcass yield and meat quality of broiler chickens." Thesis, University of Fort Hare, 2015. http://hdl.handle.net/10353/2622.
Повний текст джерелаHastings, Astley St John. "The potential of bio-energy crops to meet Europe's energy needs and reduce greenhouse emissions." Thesis, University of Aberdeen, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=26255.
Повний текст джерелаDemirel, Gulcan. "Dietary effects on fatty acid composition of sheepmeat : effects of dietary fat source, breed and vitamin E level on the fatty acid composition of sheepmeat and tissues." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322652.
Повний текст джерелаEsterhuyse, Jacobus Johannes. "The effects of different selenium sources on the meat quality and bioavailability of selenium in lamb." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71894.
Повний текст джерелаENGLISH ABSTRACT: In many parts of the world, soil is depleted of selenium (Se), leading to selenium-poor plants, animals and, therefore, humans. It was recognised that a study to examine the functionality of new products on the market to address this problem was required. The purpose of this research were threefold: to compare the effects of sodium selenite (NaSe) and organically bound selenium sources on small ruminant performance, to investigate the bioavailability of these Se sources, and analyse their influence on carcass characteristics, meat quality and antioxidant capabilities. Fourty growing Döhne Merino wethers from the Southern Cape region, a selenium-deficient area, were used for the study. The animals were all fed the same basal diet in the adaptation period and were then allocated to one of four treatment groups: Control (CT), inorganic selenium (IS), organically bound Se A (OSA) or B: (OSB). The period of supplementation was 90 days. This first study assessed the effect of the different Se sources on growth and Se bioavailability in the wethers. The wethers and the feed they consumed were regularly weighed to determine their growth and feed conversion rate (FCR) in the trial period. To gauge their Se level, blood samples were collected via jugular venipuncture at monthly intervals. The wool around the jugular was shorn and samples were collected on day 0 and day 90 for comparative Se level analysis. Liver, skeletal muscle and kidney samples were collected at day 90, directly after slaughter, to determine the Se level in these tissues. No effect could be reported in the growth and FCR of the wethers between the supplementation groups. For whole blood Se levels there was an effect in the early part of the study, with a greater increase in Se levels for the organically bound Se groups, but in the end no effect on whole blood levels could be seen between the different Se treatments. Neither could any difference between the inorganic Se and organic bound Se treatments be found in the liver – however, the total Se concentration of the wool, kidney and meat samples was greater in those animals offered organically bound Se when compared with those receiving a comparable dose of inorganic Se. The second study evaluated the antioxidant capabilities of the different Se supplements in the wethers. Blood samples were taken monthly for plasma collection to test for Glutathione peroxidase (GSH-Px) activity and total antioxidative capacity (TAC) with the oxygen radical absorbance capacity (ORAC) assay. Liver, skeletal muscle and kidney samples were collected at day 90, immediately after slaughter and measured for GSH-Px activity. With TAC, there was a significant effect for the treatment period between day 0 and day 90, however the treatments did not show any significant difference. No significant differences could be established between the different Se treatments for the GSH-Px analysis in any of the tissues. For the mean plasma values of the treatments no significant differences can be reported, but a significant difference was observed at day 30 in the contrast between the organically bound Se and the other treatment groups. The third study was to evaluate the quality and lipid oxidation of muscle from those wethers supplemented with different Se sources. Skeletal muscle samples were collected at day 90, directly after slaughter to determine this. No differences in the meat quality of the wethers could be detected between Se sources after the 90-day supplementation period. Lipid oxidation was measured by determining TBA reactive substances (TBARS) and once again no differences could be detected. Based on the results found in this investigation, it may be inferred that organically bound Se (OSA & OSB) supplementation will hold a number of advantages for small ruminants over inorganic Se supplementation. Animals fed the organically bound Se had reached adequate Se levels sooner on the organically bounded treatments than the inorganically bounded treated animals. The greater bioavailability of organically bounded Se over inorganic Se was proven by the increased Se levels in certain tissues and organs. Additionally, only the organically bounded Se could find a pathway to the wool, confirming that it was carried in an organic form (probably selenomethionine) in the body. Organically bound Se will therefore have a positive impact on small ruminant health and production, which will result in an indirect advantage for consumer health.
AFRIKAANSE OPSOMMING: Die grond in groot dele van die wêreld word selenium-arm en dit lei na selenium-arm plante, diere en mense. Dit is waargeneem dat ‘n studie wat kyk na die funksionaliteit van nuwe produkte op die mark om die probleem aan te spreek nodig is. Die doelwit van die studie was om verskillende selenium (Se) bronne te vergelyk en die uitwerking daarvan op klein herkouer prestasie te evalueer. Daar is gekyk na die biobeskikbaarheid, invloed daarvan op die karkas eienskappe en antioksidant vermoëns van die verskillende Se bronne. Veertig groeiende Dohne Merino-hamels van die Suid-Kaap-streek, 'n Se arm gebied is gebruik vir die studie. Die diere is almal dieselfde basale dieet gevoer in die aanpassing periode en dan toegeken aan een van vier behandelings: kontrole (CT), anorganiese Se (IS), organies gebinde Se A (OSA) of B: (OSB). Die tydperk van die aanvulling was 90 dae. In die eerste studie is gekyk na die effek van die verskillende bronne van Se op die groei en die biobeskikbaarheid daarvan aan die hamels. Die hamels en voer verbruik, is gereeld geweeg sodat hul groei en voer omset verhouding (VOV) in die proef tydperk te bepaal. Bloedmonsters is versamel deur middel van die jugulêre venipuncture vir die Se vlak bepaling daarvan. Lewer, skeletspier en nier monsters is versamel op dag 90, direk na die slagting vir die Se vlak bepaling. Die wol rondom die nekslagaar is geskeer en monsters is versamel op dag 0 en 90 vir Se vlak analise. Geen effek kan gerapporteer word vir die groei en VOV van die hamels tydens die aanvullings periode nie. Vir die bloed Se vlakke was daar 'n uitwerking in die vroeë deel van die studie, met 'n vinniger toename in Se vlakke vir die organies gebinde Se groepe, maar aan die einde kon geen effek gesien word tussen die verskillende Se behandelings nie. Geen verskil tussen die NaSe en organiese gebonde Se behandelings kon gevind word in die lewer nie. Die totale Se konsentrasie van die wol-, nier-en vleis
Gordana, Dimić. "Mikološki i mikotoksikološki aspekti pojave plesni u začinima." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2000. https://www.cris.uns.ac.rs/record.jsf?recordId=71455&source=NDLTD&language=en.
Повний текст джерелаAbstract was processed by technology for Optical character recognition (OCR)The presence of moulds in spice mixtures (for production of mortadella, luncheon meat, "serbian" hot sausage, "alpine" and "tirol" salami, Frankfurter and ham sausage) was investigated. The highest intensity of contamination was in spice mixtures (46,13%), then in black pepper (28,95 %) and in ground red pepper (24,92%).The group of xerophyllic moulds of genera Aspergillus, Emericella, Eurotiiim, Paecilomvces, Penicillium and Xeromyces was dominant. It was found out that the representatives of genera Aspergillus and Penicillium were the most numerous, but considering the incidence in samples (100%) the moulds of genus Eurotium (E. herbariourum) were dominant. In samples of ground red pepper the moulds of the genus Rhizopus (R. stolonifer) (87,5%) were the most frequently detected. Among 45 species identified during mycological investigation of spices, 55,5% were possibly toxicogenic. The presence of aflatoxin B1 was not observed in any of spices tested, ochratoxin A was found in two samples of black pepper (from traces to 32,00 μg/kg), and zaeralenone in three samples of black pepper (192,00 to 288,00 μg/kg).The ability for synthesis of ochratoxin A was observed in 4 of 5 tested strains of Aspergillus ochraceus (20,00 to 340,00 μg/1). The majority of A. versicolor strains and 50% of E. herbariorum synthesized sterigmatocystin in significant quantities (100,00 up to 1600,00 μg/1, and l60,00 up to 400,00 μg/l, respectively).A. versicolor showed to be rather tolerant to exposure to high temperatures by surviving the heat treatment at 800C (5 and 10 min), but the disturbed physiological activity resulted in reduced production of sterigmatocystin.By concentration of potassium sorbate of 0,5% the growth of A. versicolor on solid medium was totally inhibited, but not on liquid medium; the production of sterigmatocystin was registered only at lower concentrations (0,05 and 0,1%).
Jovan, Mirčeta. "Prisustvo, karakterizacija i kontrolne opcije za Salmonella enterica u lancu mesa divlje svinje." Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104689&source=NDLTD&language=en.
Повний текст джерелаThe presence and distribution of Salmonella enterica infection in wild boar population in hunting estates in Serbia was studied, as well as the impact of hunting and carcass dressing procedures on their microbiological conditions. With respect to the main foodborne pathogen from wild boars, Salmonella enterica, the total number of 425 wild boars, originating from 12 hunting estates, was examined. The overall Salmonella prevalence was 4.2%. Isolates were recovered from faeces (13, representing 3.1%), while fewer from skin and carcass meat swabs, i.e. 3 (0.7%) and 4 (0.9%) respectively and only one isolate from mesenteric lymph node (0.2%). Serotyping of S. enterica isolates confirmed serotypes S. Enteritidis (71.4% of total numbers of isolates), S. Typhimurium (23.8%) and S. Infantis (only one isolate, 4.8%). Salmonella enterica was more often found in animals originating from open hunting estates, and from females older than 36 months weighing >75 kg. Molecular characterisation of S. enterica isolates using Pulsed Field Gel Electrophoresis (PFGE) revealed identical profile of S. Typhimurium from the faeces and carcass meat surface of the same animal, indicating transmission of this pathogen from the faeces to carcass meat during evisceration. Also, identical and/or highly related profiles of S. enterica were determined from wild boars from different hunting estates and between wild boars and domestic pigs and poultry from nearby farms in close proximity to hunting estates. This indicate the existence of genetic link, and possibility of epidemiological link as well between wild boars and domestic animals in respect to this microbial pathogen. High microbial contamination of wild boar skin and carcass meat with indicators of general and faecal contamination was found. Based on 210 sampled wild boars from eight hunting estates, the mean aerobic colony counts (ACC) on wild boar skin was 5,2 log10 cfu/cm2 and Enterobacteriaceae counts (EBC) 3,6 log10 cfu/cm2. The mean ACC on carcass meat was 5,4 log10 cfu/cm2, and EBC 3,8 log10 cfu/cm2. Higher levels of microbial contamination on wild boar carcass meat comparing to the skin indicate that sources other than skin (such as gut content spilage due to abdominal shot, as well as other unhygienic carcass dressing procedures) play important role in carcass meat contamination. Hunting and dressing procedures mostly influenced carcass meat microbial conditions, hence statistically significant difference was observed between properly shot animals and animals shot in abdominal region, as shown on the individual hunting estate level. Other procedures also had an influence on the higher carcass meat microbial contamination with ACC and EBC, such as evisceration in the field in lying position on the ground and without access to a clean water, as well as very unhygienic practice of washing skin and interior carcass surfaces after completed evisceration. The results from this study significantly contribute to the understanding of Salmonella enterica epidemiology in wild boars in Serbia and risk factors that contribute to its spread and transmission to humans, as well as to the impact of hunting and carcass dressing procedures on their microbial status. These results are also sound scientific basis for further development of control strategies for S. enterica in wild boar population in Serbia and control of overall microbial contamination on wild boar carcass meat.
Pianigiani, Silvia. "Which data sources may be used to efficiently generate subject-specific knee models to meet clinical questions?" Doctoral thesis, Universite Libre de Bruxelles, 2016. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/229798.
Повний текст джерелаDoctorat en Sciences de l'ingénieur et technologie
info:eu-repo/semantics/nonPublished
Daroudi, Parham. "Simulation of an energy efficient single-family house in the area of Smedjebacken to meet Miljöbyggnad’s Gold House energy category requirements." Thesis, Högskolan Dalarna, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:du-28670.
Повний текст джерелаTrevis, Isaac Andrew. "Assessing and Tracking Nitrate Contamination from a Point Source and the Effects on the Groundwater Systems in Mid Canterbury, New Zealand." Thesis, University of Canterbury. Department of Geological Sciences, 2012. http://hdl.handle.net/10092/7603.
Повний текст джерелаCowan, Lucie. "Investigation of the factors associated with the risk of meat as a source of classical swine fever introduction to the UK pig population." Thesis, University of Bristol, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.652043.
Повний текст джерелаAnderson, Matthew John. "Economic and Environmental Analysis of Cool Thermal Energy Storage as an Alternative to Batteries for the Integration of Intermittent Renewable Energy Sources." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/51195.
Повний текст джерелаMaster of Science
Sanja, Ostojić. "Termalna svojstva proteina mesa u procesu osmotske dehidratacije u melasi šećerne repe." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=95787&source=NDLTD&language=en.
Повний текст джерелаThermal properties of pork meat (Longissimus dorsi) osmotically dehydrated in sugar beet molasses and fresh pork were followed by the methods of thermal analysis: Differential Scanning Calorimertry (DSC), Thermogravimetric Analysis (TGA), Modulated Differential Scanning Calorimetry (MDSC). The results indicate the existence of newly formed protein matrix as a consequence of osmotic dehydration of pork meat: reducing the amount of water and the interaction of the components of molasses and meat proteins. It has been found that changes were induced by the process of osmotic dehydration, and rearrangeement of the remaining free water in two forms. Also as a consequence of the osmotic dehydration, structural changes in the interfibrilar network and simplifying of the original structure of the meat protein matrix were occurred. A structural levels of protein matrix were defined: as structural level of the water bound to the protein, meaning the existence of protein structure and after osmotic dehydration Structural level I; a structural level with uniformly small pores in the network of formed protein matrix: energy level of more tightly immobilized water –Structural level II; and structural level of network with uniformly larger pores, energy level of lower bound immobilized water - Structural level III. By characterization of the thermal properties of the samples of osmotically dehydrated meat with reduced moisture (below 20%) the glass transition was found, as most of the water bound to a solid matrix.The optimal conditions for rehydration of dehydrated pork meat were defined, and Peleg‘s rehydration constants were obtained. It was found that the existence of the native structure of the protein in the osmotically dehydrated meat, and the kinetic parameters of protein denaturation (Ea, kb) of fresh and dehydrated meat were obtained. The content of macroelements in the osmotically dehydrated, fresh pork meat and in the sugar beet molasses were obtained. In order to explain the complexity of the interaction of meat proteins with the components of the osmotic solution -molasses that occur in the dehydration process, the model-system of the protein bovine serum albumin (BSA) interaction with the ions were implied to present simple interaction of some major elements with a protein matrix followed by DSC and ITC .
Nataša, Vulelić. "Menadžerski kapaciteti proizvođača tovnih pilića i njihov uticaj na rezultate proizvodnje." Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=92750&source=NDLTD&language=en.
Повний текст джерелаIt is a well-known fact that there are significant differences in production output and business results of farms operating under rather similar natural and socio-economic conditions. Such differences can be attributed to biological factors, specialization level and production intensity, size of farms, implemented production practice, but also to the differences in capabilities of farmers, that is, their managerial capacities.
The starting point in selection of subjects for the research was significance of managerial capacities and the fact that not enough attention is dedicated to them, as well as the necessity of urgent improvement of competitiveness in production of poultry meat in our country. Therefore, the subject of the research in this doctoral dissertation is managerial capacities of broiler producers in Vojvodina. When analysing managerial capacities of broiler producers, not only were personal aspects taken into account (gender, age, education level, previous experience, etc.), but the subject of consideration includes characteristics of decision making process (planning, implementation and control) as well. The main objective of the study is to point out to the significance of managerial capacities, possibilities and methods implemented in their assessment, and to establish the reason why some of the broiler producers in Vojvodina, operating under rather similar conditions, are more efficient as compared to other farmers. In order to analyse managerial capacities of broiler producers and to judge whether and to what extent do they influence the production output (technical and economic efficiency), 30 broiler farms of different production capacities, all at the territory of AP Vojvodina, were comprised in the analysis.
One of the starting hypotheses in this study considers significant differences in technical and economic efficiency between the selected broiler farms. Technical and economy efficiency indexes, obtained by implemented DEA method, indicate that such hypothesis was justified. The obtained TE indexes point out that broiler producers in Vojvodina are relatively technically efficient (six out of thirty producers achieved maximum level of TE). However, the number of farms that achieved maximum level of EE is much lower (only one out of thirty farms achieves maximum level of EE), which indicates the market difficulties that producers are coping with, but also proves that it is possible to operate better under the existing conditions which are assumed to be the same for all. The number of economically inefficient farms could be reduced through decrease of production costs (primarily reduction of feed costs, increase of operation productivity, reduction of energy costs, etc.), which certainly requires, as one of preconditions, the adequate managerial capacities of producers.
The assumption that certain aspects of managerial capacities, such as personal aspects and decision making process, influence TE and EE has been confirmed with the results of Tobit regression. Statistically significant influence of achieved TE and EE is confirmed in 9 out of 82 variables included in the models. This certainly does not mean
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that other aspects of managerial capacities are not significant, but that under current conditions, relatively small number of variables determines the number of farms that will manage to achieve or at least to nearly achieve “the best possible practice”.
Statistically significant influence was also proven in certain personal aspects of producers, as well as in some aspects of decision making process. Therefore, it is necessary to explain to producers and advisors the significance of the aforesaid aspects and to work on their improvement. The only aspect proven as significant both for TE and EE is the experience of farmers, which only explains the poor working environment that our producers operate in. The conclusion which can be derived from the aforesaid is that the most significant and irreplaceable managerial capacity of broiler producers is their experience. Such experience mainly refers to business relations and acquaintances obtained from long-lasting engagement in broiler production, but also to their ability to find their way and achieve success in conditions of the black economy.
The fact that there is no statistical significance in terms of influence of certain aspects of managerial capacities on TE and EE, actually points out to underdevelopment of the required managerial capacities of broiler producers. Therefore, the improvement of managerial abilities must be set as the permanent task, so competitiveness of poultry meat sector could be increased. To this effect, it is necessary to provide constant education through trainings and seminars, as well as regular cooperation with advisory service (particularly in terms of significance of keeping records, planning and control of the achieved results), but also through exchange of experience and cooperation with other producers.
Radoslav, Šević. "Zdravstveno stanje i kvalitet mesa svinja rase mangulica i meleza između rase mangulica i duroka." Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=105499&source=NDLTD&language=en.
Повний текст джерелаThe research was carried out in order to determine the effect of the cross-breeding of mangulets with durok on production and health parameters, as well as on the quality of meat, all along with a modern, noble breed of pigs - a large Yorkshire. For this purpose, three groups - pig genotypes, pure breeds of white mangulica (BM), meliaceae and white manguns (DBM), and pure breed, Yorkshire (VJ), were placed in the same conditions of nutrition, care and keeping. Pigs from the DBM and VJ groups increased significantly to a target bodyweight of 150 kg compared to BM pigs. Thus, mulberry and white mangulets were average 168 days less, and 288 days lower for pigs from the VJ group in order to reach their target body mass compared to white mangun pigs in a clean race. There are no significant differences in terms of health status and findings on carcases of slaughtered pigs post-mortem. Significant differences were established in the hematological and biochemical parameters, among all three groups studied, but also between different age categories within the same investigated group, which points to the importance of more precise determination of the reference parameters of normal physiological values of hematologic and biochemical parameters not only for individual species of animals, but also for different age categories within the same species. Meat originating from pigs from the BM group had the highest content of intramuscular fat, and the darker and redder color, followed by moles with significant differences between all three investigated genotypes. Furthermore, the pig meat of the white mangulce had a significantly higher end value of pH, better water binding capacity, higher content of calcium, zinc, iron, copper and manganese, compared to the other two genotypes. The crossing of white mangulce and durok had a significant effect on the individual composition of fatty acids in the meat. However, the sum of saturated, monounsaturated and polyunsaturated fatty acids remained unchanged. Meat of pig breeds white mangulica and molasses obtained by crossing the pig race white mangulica and durok is significantly more gentler - softer. Monounsaturated fatty acids are the most common in meat originating from all animals, followed by saturated and at the end of polyunsaturated fatty acids. Meat originating from BM and DBM had a significantly higher content of monounsaturated fatty acids, and significantly lower saturated fatty acid content than VJ. In general, on the basis of all the tested parameters of the quality of the halves and flesh, it can be concluded that the pig breeds of white mangulets are characterized by lower meatiness of the hemispheres, but also meat that has excellent sensory, technological and nutritive quality, while the piglets of pigs obtained by crossing the pig rasa white mangulica and durok are characterized by larger lean meat and slightly weaker but still very good quality of meat, and further research is needed in order to obtain data on the quality of the cream products. Also, additional ones are neededresearch, a more precise character in terms of quality and cost-effectiveness in autochthonous breeds, as well as the reconsideration of selection criteria applied to mangulas and parameters of genetic progress, i.e. the effect of the selection, in order to take an autochthonous step in survival or prestige in relation to modern pig breeds.
Alcalde, Melo Henrique [Verfasser], and Harald [Akademischer Betreuer] Schwarz. "Integration of available regenerative energy sources in community networks for both electricity and heating / Henrique Alcalde Melo. Betreuer: Harald Schwarz." Cottbus : Universitätsbibliothek der BTU Cottbus, 2013. http://d-nb.info/1032899077/34.
Повний текст джерелаNataša, Vukićević. "Elektrohemijsko taloženje niobijuma iz fluoridnih rastvora i hloroaluminatnih rastopa na staklastom ugljeniku, platini i zlatu." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104330&source=NDLTD&language=en.
Повний текст джерелаThe aim of this study was to establish electrodeposition of niobium and aluminium from chloroaluminate melt (AlCl3 + NaCl) enriched with niobium onto gold, platinum and glassy carbon substrates. Furthermore, if such deposition is shown to occur, to assess if it can lead to formation ofniobium alloys with chosen substrates or formation of Nb/Al alloys as a result of codeposition. And finally, if the deposition is indeed confirmed, to establish the lowest operational temperature at which it is possible.Niobium and aluminium were electrodeposited onto glassy carbon, gold and platinum at 200 °C, under an argon atmophere from the melt made of equimolar mixture AlCl3 + NaCl with niobium being added.Research methods used were: cyclic voltammetry, potentiodynamic polarization curves, "open circuit”, chronoamperometry, SEM, EDS, AFM and XRD analysis. Underpotential deposition of Nb and Al from the melt onto gold substrate was observed. Of the two, niobium deposition is a novelty, while alumininum deposition has been previously studied. Underpotential deposition of NB and Al onto gold from given melt precedes the overpotential deposition of aluminium and niobium onto gold. The result of these processes are Nb/Au and Al/Au alloys formed by codeposition of the two metals and interdiffusion between the Nb and Al deposits and the substrate -gold (AlAu, AlAu2, AlAu4, AlNb2, AlNb3, Au2Nb, Au2Nb3, AuNb3, AlNb3). Underpotential deposition of niobium onto platinum from used melts was recorded and it precedes the processes of overpotential deposition of niobium and aluminium. The result is formation of Nb/Pt alloys as a consequence of interdiffusion between the substrate and the deposited Nb (Nb3Pt). The potentials more negative than the aluminium deposition potential in the used system lead to deposition of niobium and aluminium individually and jointly. Thus, a number of alloys are formed (AlNb3, Al3Pt5, Nb3Pt). Niobium electrodeposition onto chosen substrates from the melt applied takes place at potentials which are more positive than the potential of electrodeposition of aluminium. Formation of the obtained alloys occurred at a temperature of 200 °C which is several hundred degrees lower than the temperatures needed for their formation by thermal methods.
Sanja, Popović. "Утицај примене мешавине етарских уља у исхрани на производне карактеристике и квалитет меса бројлерских пилића". Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=110622&source=NDLTD&language=en.
Повний текст джерелаZadatak ove doktorske disertacije je bio da se ispita mogućnost i efekti primene mešavine etarskih ulja timijana (Thymus vulgaris), origana (Origanum vulgare) i ruzmarina (Rosmarinus officinalis), kao prirodnog promotera rasta, u uzgoju brojlerskih pilića na proizvodne karakteristike, biohemijske parametre krvi, histo-morfološke parametre jetre i crevnih resica, svarljivost hranljivih materija, kvalitet trupa i mesa pilića, kao i na ekonomičnost same proizvodnje.U cilju realizacije postavljenih zadataka izveden je biološki ogled u kojem su korišćeni brojlerski pilići linijskog hibrida Ross 308. Biološki ogled je izveden na ukupno 840 jednodnevnih brojlerskih pilića, podeljenih u tri ogledna tretmana, dva eksperimentalna i jedan kontrolni. Kao prirodni promoter rasta korišćena je mešavina etarskih ulja timijana, origana i ruzmarina u koncentracijama od 0,05 i 0,10%.Tokom oglednog perioda kontinuirano su praćene proizvodne karakteristike brojlerskih pilića, a na osnovu analize dobijenih rezultata zaključeno je da ispitivana mešavina etarskih ulja timijana, origana i ruzmarina može veoma uspešno da se koristiti u ishrani brojlerskih pilića kao prirodni promoter rasta. Pozitivan uticaj ovog dodatka je najpre iskazan kroz porast prirasta brojlerskih pilića (4,29-4,61%), kao i na konverziju hrane kod jedinki (7,69-8,28%). Posmatrano po periodima ishrane, najekonomičnija proizvodnja brojlerskih pilića u starter periodu ishrane postignuta primenom 0,05% mešavine etarskih ulja timijana, origana i ruzmarina u ishrani brojlerskih pilića, dok se u grover periodu ishrane efikasnijom pokazala doza od 0,10%. Najekonomičnija proizvodnja brojlerskih pilića tokom celokupnog perioda tova ostvarena je primenom 0,05% mešavine etarskih ulja timijana, origana i ruzmarina u ishrani, budući da je u ovom tretmanu postignuta najmanja vrednost cene prirasta pilića (71,41 din/kg) najveća vrednost indeksa ekonomske efikasnosti, kao i najmanja vrednost indeksa cena proizvodnje. Analizom rezultata dobijenih ispitivanjem aktivnosti pankreasnih enzima u krvenom serumu i pankreasu brojlerskih pilića, ustanovljeno je da dodata mešavina etarskih ulja utiče pozitivno na aktivnost pomenutih enzima u pankreasu, pri čemu je ustanovljena i značajna pozitivna korelacija između aktivnosti proteaze u pankreasu i krvnom serumu brojlerskih pilića (r =+0,858; p<0,05). Kada je reč o specifičnom titru antitela u krvnom serumu brojlerskih pilića utvrđeno je da je primena mešavine etarskih ulja timijana, origana i ruzmarina u ishrani brojlerskih pilića u koncentraciji od 0,10% doprinela blagom porastu koncentracije IgA antitela u krvi što potencijalno predstavlja indikator jačanja imunološkog sistema, dok je statistički značajan (p<0,05) uticaj uočen i na sekreciju IgG antitela u krvnom serumu brojlerskih pilića u oba eksperimentalna tretmana. Dodata mešavina etarskih ulja nije ispoljila efekte na odabrane pokazatelje lipidnog statusa krvi brojlerskih pilića, međutim uticala je na značajno poboljšanje svarljivosti sirovih proteina, sirove masti, sirovog pepela, kalcijuma i fosfora kod brojlerskih pilića, čime je povećana iskoristljivost osnovnih hranljivih materija, a samim tim su poboljšane i proizvodne karakteristike. Utvrđene pojedinačne vrednosti svih ispitanih faktora kvaliteta trupa zaklanih pilića ukazuju na pozitivne efekte koje su fitobiotici ispoljili u organizmu brojlerskih pilića. Takođe, primenom navedene mešavine etarskih ulja u ishrani brojlerskih pilića dobijeno je pileće meso poboljšanih nutritivnih, tehnoloških i senzorskih svojstava. S obzirom na značaj masnih kiselina u ishrani ljudi, od velike važnosti je pozitivan učinak koji je dodata mešavina etarskih ulja timijana, origana i ruzmarina ispoljila na masnokiselinski sastav mesa brojlerskih pilića. Smanjen je sadržaj zasićenih masnih kiselina, uz istovremeno povećanje sadržaja polinezasićenih masnih kiselina, čime je postignut preporučen odnos n-6 / n-3 masnih kiselina u mesu pilića.Na osnovu dobijenih rezultata može se zaključiti da se izbalansiranom hranom za brojlerske piliće, sa optimalnim sastavom i sadržajem prirodnih promotera rasta mogu dobiti pilići poboljšanih proizvodnih karakteristika, koji se odlikuju efikasnom svarljivošću hranljivih materija, te imaju dobre randmane i više mesa na trupu. Dodatno, dobijeno meso je pobošljanog nutritivnog, tehnološkog i senzorskog kvaliteta, obogaćeno n-3 masnim kiselinama i odlikuje se optimalnim odnosom n-6/n-3 masnih kiselina. Kada se na sve to dodaju i pozitivni ekonomski parametri proizvodnje onda se sa sigurnošću može tvrditi da je upotreba mešavine etarskih ulja timijana, origana i ruzmarina u ishrani brojlerskih pilića potpuno opravdana.
The main objective of this research was to investigate the possibility and effects of dietary essential oils mixtures of thyme (Thymus vulgaris), oregano (Origanum vulgare) and rosemary (Rosmarinus officinalis), as a natural growth promoter, in broiler chicken nutrition on productive performances, blood biochemical parameters, morphological parameters of liver and villus, ileal nutrient digestibility, carcass characteristics and broiler meat quality, as well on the economic efficiency coasts of broiler chicken production. In order to realize the tasks set, biological trial was carried out on which Ross 308 strain broiler chickens. A totall of 840 one-day-old broiler chickens were equally distributed into three dietary treatments, two experimental and one control. As a natural growth promoter dietary thyme, oregano and rosemary essential oils mixture in concentrations 0.05 i 0.10% was used.During the experimental period, the production characteristics of broiler chickens were continuously monitored. Based on the analysis of the obtained results, it was concluded that the dietary thyme, oregano and rosemary essential oils mixture can be used very successfully in the nutrition of broiler chickens as a natural growth promoter. The positive effect of this supplement was first expressed through the increase in broiler chickens body weight gain (4.29-4.61%), as well through the feed conversion ratio (7.69-8.28%). Observed by the nutrition periods, the most economical production of broiler chickens in the starter period was achieved using 0.05% of the dietary thyme, oregano and rosemary essential oils mixture, while in a grover period a 0.10% dose proved to be more effective. The most economical production of broiler chickens during the entire fattening period was achieved using 0.05% of the dietary thyme, oregano and rosemary essential oils mixture in nutrition, since in this treatment the lowest value of body weight gain price (71.41 din/kg) was achieved, as well as the highest value of the economic efficiency index, and the smallest value of the price index. Regarding the activity of pancreatic enzymes in blood serum and pancreas of broiler chickens, it was found that the added mixture of essential oils had positive influence on the enzymes activity in pancreas, with a significant positive correlation between the protease activity in the pancreas and the blood serum of broiler chickens (r=+0.858; p<0.05). When it comes to the specific antibody titer in the blood serum of broiler chickens, it has been found that the use of a dietary thyme, oregano and rosemary essential oils mixture in broiler chickens nutrition at a concentration of 0.10% contributed to a mild increase in the IgA antibody concentration in the blood, which potentially represents an indicator of the strengthening of the broiler chickens immune system, while statistically significant (p<0.05) influence was observed on the IgG antibodies secretion in blood serum of broiler chickens in both experimental treatments. The added mixture of essential oils did not influence lipid profile status of broiler chickens blood, however, had positive effect on the digestibility of raw proteins, raw fats, raw ash, calcium and phosphorus in broiler chickens, which increased the utilization of basic nutrients, and therefore production characteristics of broiler chickens were improved. Improved carcass characteristics in experimental treatments indicate positive effects that phytobiotic exhibited in broiler chickens. Moreover, using the mixture of essential oils, nutritional, technological and sensory properties of chicken meat has been improved. Considering the importance of fatty acids in human nutrition, the positive effect of dietary thyme, oregano and rosemary essential oils mixture on the fatty acid composition of broiler chicken meat has a great significance. The saturated fatty acids content was reduced, while the polyunsaturated fatty acids content was increased, thus achieving the recommended ratio of n-6/n-3 fatty acids in chicken meat.Based on the obtained results, it can be concluded that with well-balanced feed, which contains optimal composition and content of natural growth promoters, can produce broiler chickens with improved production characteristics, which are characterized by an effective nutrients digestibility, and have good carcass yield and more meat. In addition, the obtained meat will have improved nutritive, technological and sensory quality, enriched with n-3 fatty acids and with optimal ratio of n-6/n-3 fatty acids. When all of this is added to the positive economic parameters of production then it can be safely claimed that the use of a dietary thyme, oregano and rosemary essential oils mixture in broiler chickens nutirition is completely justified.
Pinedo, Gil Julia. "Study of novel carbohydrate sources on rainbow trout (Oncorhynchus mykiss) diets." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/107364.
Повний текст джерелаThe current Doctoral Thesis used barley and red beet as alternative carbohydrate sources in rainbow trout diets. The aim was to evaluate their effect on productive, histological and morphometric parameters, their effect on biochemical indexes after an acute stress and their effect on the quality of rainbow trout (Oncorhynchus mykiss). The different markers studied were the same in the barley and red beet experiments. In the barley experiment, increasing concentrations of barley (0-32%) were used in the diet, starting with an average weight of 127.72 ± 5.65 g and ending when they reached commercial weight after 84 days. In the red beet experiment, two red beet levels (14% and 28%) and two betaine levels (0.9% and 1.63%) were used, starting with an average weight of 69 ± 2.2 g and finishing when they reached commercial weight at the end of 105 days. The inclusion of barley in rainbow trout diets did not show significant differences in growth and biometric parameters. While the inclusion of 14% of red beet and 0.9% betaine did not affect growth, nutritive or biometric parameters and nutrient retentions compared to control, higher red beet and betaine concentrations showed a negative effect. When the histological and morphometric parameters were studied in liver and intestine, the results showed that fish fed at high barley concentrations showed smaller hepatocytes than control, while hepatocytes were larger in fish fed with red beet and betaine than control, however, in both cases, the liver had a lower level of vacuolization. Barley inclusion at 8% produced a negative effect at intestine morphological level; however, no effects were observed with the inclusion of red beet. Fish were submitted to stress, a lack of oxygen and increased of fish density, during 10 minutes. The results showed that at basal levels, the inclusion of barley and red beet did not cause any change in cortisol, glucose and MDA levels, although basal lactate values were significantly lower in the fish fed with red beet and betaine. Thirty minutes after stress the concentration of cortisol, glucose and lactate increased significantly in the fish of all groups and the concentration of MDA decreased. The inclusion of barley showed lower cortisol, glucose and lactate values than control. When fish reached commercial weight, the quality of the fillets and antioxidant properties were analysed. In both trials, fish fed with the experimental ingredients showed lower water activity values and textural and colour properties were enhanced. Red beet and betaine inclusion did not show any effect on the oxidative parameters of the fillets, while the inclusion of barley showed an inhibitory effect on fillets lipid oxidation. Concentrations of barley above 8% improved the antioxidant activity of the fillets and increased the content of alpha-tocopherol, however, fish fed with red beet and betaine showed a higher content of flavonoids and phenolics but no effect on the antioxidant properties of the fillet. Finally, when the sensory analysis was carried out, it was observed that fish fed diets with more than 8% barley showed redder gills and better texture than control, in addition to a more intense red colour of the fillet, these characteristics are correlated with an improvement of fish freshness. However, the inclusion of barley or red beet in rainbow trout diets had no effect on the acceptability of fillets.
En la present tesi doctoral es van utilitzar ordi i remolatxa com a fonts alternatives de carbohidrats en dietes per a truita amb l'objectiu d'avaluar el seu efecte sobre paràmetres productius, histologia hepàtica i intestinal, estrès i qualitat de la carn. Els marcadors estudiants fòren els mateixos en els experiments d`ordi I remolatxa. En les proves de l'ordi es van utilitzar concentracions creixents d'aquest ingredient (0-32%), es va iniciar amb un pes mitjà de 127.72 ± 5.65 g i es va finalitzar quan van arribar al pes comercial al cap de 84 dies. En les proves de remolatxa es van utilitzar dos nivells de remolatxa (14% i 28%) i dos de betaïna (0.9% i 1.63%), es va iniciar amb un pes mitjà de 69 ± 2.2 g i es va finalitzar quan els peixos van aconseguir el pes comercial al cap de 105 dies. La inclusió d'ordi en dietes de truita no va mostrar diferències significatives en els paràmetres de creixement i biomètrics. La inclusió de 14% remolatxa i 0,9% betaïna no va afectar el creixement, paràmetres nutritius, biomètrics i retencions de nutrients en comparació amb el control, concentracions majors de remolatxa i betaïna van tenir un efecte negatiu. Quan es van estudiar els paràmetres histològics i morfomètrics en fetge i intestí, els resultats van mostrar que els peixos alimentats amb concentracions creixents d'ordi tenien hepatòcits més petits, mentres que els peixos alimentats amb remolatxa i betaïna presentaven hepatòcits més grans, i en ambdós casos el fetge va mostrar un menor nivell de vacuolització. La concentracion d'ordi d'un 8% va produir un efecte negatiu a nivell morfològic de l'intestí, mentres que la inclusió de remolatxa no va produir cap efecte a nivell d'intestí. Els peixos van ser sotmesos a estrès per absència d'oxigen i augment de densitat durant 10 minuts. Quan l'estrès va ser analitzat a nivell bioquímic els resultats van mostrar que a nivells basals, la inclusió d'ordi i remolatxa no va causar cap canvi en els nivells de cortisol, glucosa i MDA, encara que els valors basals de lactat van ser significativament més baixos en els peixos alimentats amb remolatxa i betaïna. 30 minuts després de l'estrès la concentració de cortisol, glucosa i lactat va augmentar significativament en els peixos de tots els grups i la concentració de MDA va disminuir. La inclusió d`ordi va mostrar valors més baixos de cortisol, glucosa i lactat que la dieta control. Quan els peixos van aconseguir el pes comercial es va analitzar la qualitat dels filets i propietats antioxidants. En ambdues proves els peixos alimentats amb els ingredients objecte d'estudi van mostrar valors d'activitat d'aigua més baixos i una millora en la textura i el color dels filets comparat amb els peixos alimentats amb la dieta control. La inclusió de remolatxa i betaïna no va tenir cap efecte sobre els paràmetres oxidatius del filet, mentre que la inclusió d'ordi va inhibir l'oxidació lipídica dels filets. Concentracions d'ordi per sobre del 8% van millorar l'activitat antioxidant dels filets i van augmentar el contingut en alpha-tocoferol, però, els peixos alimentats amb remolatxa i betaïna van mostrar un major contingut en flavonoides i fenòlic però no es va observar cap efecte sobre les propietats antioxidants del filet. Finalment, quan es va dur a terme l'anàlisi sensorial es va observar que els peixos alimentats amb dietes amb més d'un 8% d'ordi van mostrar unes ganyes més vermelles i millor textura, a més d'un color vermell del filet més intens, paràmetres que es correlacionen amb una millora de la frescor del peix. No obstant això, la inclusió d'ordi o remolatxa en dietes de truita no va tenir cap efecte sobre l'acceptabilitat dels filets.
Pinedo Gil, J. (2018). Study of novel carbohydrate sources on rainbow trout (Oncorhynchus mykiss) diets [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/107364
TESIS
Ivana, Filipović. "Uticaj procesa osmotske dehidratacije na promene mikrobiološkog profila dehidriranog poluproizvoda od pilećeg mesa." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2020. https://www.cris.uns.ac.rs/record.jsf?recordId=114865&source=NDLTD&language=en.
Повний текст джерелаThe effect of process parameters values on: technological efficiency of chicken meat osmotic dehydration process in water solution of NaCl and succrose and molasses; selected microorganisms (Escherichia coli, Salmonella spp., Listeria monocytogenes) in osmotic solutions reduction levels; selected microorganisms on dehydrating chicken meat reduction levels, is investigated. The osmodehydrated chicken meat suitability for selected microorganisms’ growth and multiplication during storage period is also investigated, together with defining health safe storage period, on the basis of microbiological and chemical analysis.Results shows that increase of process parameters of temperature, duration and osmotic solutions’ concentrations leads to mass transfer increase between dehydrating material and osmotic solutions and process efficiency increase. Exposure of selected microorganisms to osmotic solution has led to high levels of reductions of their numbers. Processes in molasses had higher levels of microorganisms’ reductions in comparison to the water solution. Achieved levels of the selected microorganisms’ on chicken meat reductions were lower in comparison to the results of reduction of the same microorganisms directly inoculated in the same osmotic solutions. With the increase of the inocualted, osmotically dehydrated chicken meat storage time in both osmotic solutions, decrease of all tested microorganisms occured. Proteolytic microorganisms were not detected in dehydrated chiken meat, while histamin content showed that, during storage, there was no meat protein degradation. After 10 days of storage, meat was not rancid, while malondialdehid values showed that lipid oxidation occured after 14 days of storage. On the basis of obtained results, mathematical models of dependance of: osmotic dehydration process responces; selected micororganisms in osmotic solutions reduction levels; selected microorganisms on osmodehydrated chicken meat reduction levels; and osmodehydrated chicken meat during storage microbiological and chemical responces; from varied process parameters, were developed.Based on obtained results, as optimal process parameters it can be defined: 5-hour process, at 32 °C, in molasses of maximal concentration, as osmotic solution. All achived microorganisms’ reduction levels can indicate on good basis of health safe chicken meat production. Analysis of storage duration has shown that osmotdehydrated chicken meat is microbilogicaly and chemicaly stabile during sotrage at 22 °C in period of at least 10 days.
Jaborek, Jerad R. "Effects of Energy Source, Energy Level, Sex, and Age on Growth, Performance, Carcass Characteristics, Meat Characteristics, and Flavor Intensity of Lambs, Yearling Ewe Lambs, and Mature Ewes." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1480423720172888.
Повний текст джерелаZhang, Na. "The design and implementation of an assessment management module to function within the architectural constraints of an existing Open Source Software (OSS) learning management system (to meet target-user requirements)." Thesis, Peninsula Technikon, 2004. http://hdl.handle.net/20.500.11838/1371.
Повний текст джерелаThis dissertation was written in fulfillment of the requirements for the degree Master of Technology in the Faculty of Information Technology at the Peninsula Technikon in South Africa. The dissertation covers the introduction of the study; the reviews of the case, Free and Open Source Software; the discussion of methodology of software project management in terms of software engineering; the analysis of assessment methods; the techniques of using PHP, MySQL, Apache and CVS; and the implementation of a test module. The research represents the consideration of the problem, namely that there are few free assessment manager programmes that can be used for the quick and efficient deployment of academic assessments. An experimental research method was used to with the aim of solving the above problem. In other words, a test management system module had to be designed and implemented to function within the architectural constraints of a developing Open Source Software (OSS) Learning Management System (LMS), which is called Knowledge Environment for Web-based Learning Next Generation (KEWL.NextGen). The test management system is a module developed on Object-Oriented Programming (OOP) in PHP and MySQL application. The scripts of this test module are written under the KEWL.NextGen' application framework, which is based on a close approximation of model, view and controller (MVC) design III pattem. Now the entire source coding of the test module has been uploaded to Web site http://kngforge.uwc.ac.za. This test module can be used for the creation and management of an online test. It provides facilities to create a new test, and to preview, edit, delete and mark an existing test. Three question types have been achieved, namely multiple-choice, true/false and short answer.
Wang, Zhanyu. "The design and implementation of a discussion forum module to function within the architectural constraints of an existing Open Source Software (OSS) learning management system (to meet target-user requirements)." Thesis, Peninsula Technikon, 2004. http://hdl.handle.net/20.500.11838/1381.
Повний текст джерелаHigher education and online discussions are an integral part of collaboratively based e-Learning systems. However, there problems can be associated with current online discussion models. For example, it can be easy to set open-ended discussions which attract little participation and to assess contributions can be difficult or time-consuming. Students may not achieve the expected learning outcomes without proper structure and management in online discussions. This paper proposes to design and implement a discussion forum object to function within the architectural constraints of an existing Oss learning management system (to meet target user requirements) that is a web-based environment for online discussions where the facilitator can structure each discussion according to its nature and where learning requirements are using already designed templates.
Sun, Ke. "The design and implementation of an assignment management module to function within the architectural constraints of an existing Open Source Software (OSS) learning management system (to meet target-user requirements)." Thesis, Peninsula Technikon, 2004. http://hdl.handle.net/20.500.11838/1388.
Повний текст джерелаThis document describes the design and implementation of an Assignment Management Module (AMM) to function within the architectural constraints of an eXisting open-source software (OSS) Leaming Management System (LMS). The project is established for Infonmation Technology Department Master Degree Project of the Peninsula Technikon. The Assignment Management Module will be constructed in orders to make it easier to create, mark, and manage assignments and record individual student perfonmances. The design entailed work on different function blocks like a user's authorisation, files uploadfdownload and mailing reminder unit as well as writing and testing of the application code on the intemet/intranet. The development process of the project to explore how to fu lfi11 software engineering methodology in an open-source environment, also presents details of the design architecture and technologies to be used, as well as being mindful of its future directions. The target audience of this document is anyone with an interest in an open-source software project in general, and in a Learning Management System in particular. If the reader has also been a contributor to Learning Management System, and especially to the management of assignments, this document may provide additional value, in that it strives to present a new approach to the understanding of such a module.
Ivan, Jokić. "Анализа мел-фреквенцијских кепстралних коефицијената као обележја коришћених при аутоматском препознавању говорника". Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2014. https://www.cris.uns.ac.rs/record.jsf?recordId=88036&source=NDLTD&language=en.
Повний текст джерелаRad je okrenut ka analizi mel-frekvencijskih kepstralnih koeficijenata kao obeležja govornika koja se koriste pri automatskom prepoznavanju govornika. Ispitan je uticaj promene oblika čujnih kritičnih opsega kao i modifikacije energije u njima na tačnost prepoznavanja govornika. Takođe ispitane su i neke transformacije radi umanjenja vremenske promenljivosti modela istih govornika.
The work is oriented towards the analysis of mel-frequency cepstralcoefficients as speaker features used in automatic speaker recognition. Theinfluence of the shape of auditory critical bands as well as the proposedenergy modification inside them is tested. Also, some transformations forreducing of time variability of models of the same speakers are proposed.
Chieux, Marion. "Vieillissement des systèmes barrière thermique : transformation de phases, oxydation et effet du soufre sur l'adhérence." Phd thesis, École Nationale Supérieure des Mines de Paris, 2010. http://pastel.archives-ouvertes.fr/pastel-00997369.
Повний текст джерелаMiljan, Veljić. "Svetlosni program, gustina naseljenosti i sastav obroka u funkciji proizvodnih parametara,kvaliteta mesa i dobrobiti brojlerskih pilića." Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2016. https://www.cris.uns.ac.rs/record.jsf?recordId=101567&source=NDLTD&language=en.
Повний текст джерелаThe purpose of the research was to investigate the effect of the lighting program (constant – KS and intermittent – ORS), feed density and stocking density and their interaction with production and slaughterhouse characteristics of broiler chicken, meat quality and feet pad damage.The research was conducted on a chicken farm Donji Crnci in the vicinity of Podgorica, in three trials: the first trial focused on effects of the lighting program and feed density, the second on the lighting program and stocking density and the third on the lighting program and the feed density (mixes with standard and increased content of energy and protein, with a constant energy:protein ratio). Each of the trials included 320 chicken of the Cobb 500 hybrid line, mixed sexes; trials lasted for 42 days. In all three trials, four groups were formed with four repetitions and each group included 80 one-day chickens.Production parameters (weight, feed consumption and deaths) were monitored in all trials and feed conversion ratio and production index were calculated. Weight was measured when broilers were 1; 7; 14; 21; 28; 35 and 42 days old. Feed consumption was determined at the end of the use of specific mixes, as follows: 14th day the quantity of starter mix consumed, 35th day the quantity of grower mix consumed and 42nd day quantity of the finisher mix. Mortality rate was determined by recording the number of chicken that died during the trial. Production indices were calculated based on weight, food conversion ratio and mortality.At the end of all trials, at 6 weeks of age, the chickens were measured individually, group averages were calculated and then by random sampling, 20 chicken were taken from each group (10 males and 10 females) in order to analyse slaughter characteristics. Pre-slaughter fasting lasted for 12 hours. After slaughter and cleaning, the carcasses were cooled to 40C over 24 hours and then processed as: “classical processing”, “ready to grill” and “barbecue ready”.In carcass processing, abdominal fat was taken out, weight of processed carcases measured and carcass yield values were obtained. In order to determine the yield and share of the main and secondary parts of the carcass, cooled carcasses were cut out. Evaluation of carcass conformation was done on the basis of absolute measures of the following: metatarsus length, keel length, breast depth and drumsticks circumference. Index representing the ratio of live weight before slaughter and measure observed was used (g/mm).In Trial II, physical examination of bones was done, on femur, upon separation from the broiler skeleton, and in Trial III moisture content, total fat content, total ash content and total protein of white and red meat was determined on samples of muscle tissue of breasts and thighs of 5 male and 5 female carcasses in each of the treatments (20 in total).The results show that lighting program had no statistically significant effect on final body weight in Trials I and II, while in Trial III, higher weights were recorded in chicken fattened under KS. ORS resulted in slowing down of the growth rate in the first fattening period, and as a result of compensatory growth it had no effect on final weights, except in the third trial. Better food conversion ratio in the period of finisher mix diet was achieved by chicken in Trial I under ORS than those under KS, as well as in starter mix diet in Trial III. Lighting program in Trial II had no effect on food conversion ratio and mortality of chicken. Feed density did not have an effect on final weights, feed conversion, mortality and production index. In chicken fed with meals with higher protein and energy content, higher weight was recorded at the end of the fattening period (P<0.01). Feed density in Trials I and III did not have an effect on feed conversion ratio, mortality and production index. Significantly higher weight was recorded in chicken fattened at the stocking density of 12 animals/m2 (2667.08 g) than at the density of 17 animals/m2 (2435.768g) and differences had statistically high significance. No effect of stocking density was identified in terms of feed conversion, mortality and production index.Factors analysed (light, feed density and stocking population) did not have an effect on carcass yield, but interactions of some of them did. In all the trials, a smaller share of abdominal fat was established under ORS than under KS, but it was not statistically significant. Feed density and stocking density had no effect on abdominal fat content. Higher abdominal fat content in all trials was found in female than in male chicken. The share of breasts is larger under KS than under ORS, but differences are statistically significant only in the Trial III. Feed density and stocking density had no effect on the share of breasts in the carcass. The share of drumsticks was higher in chicken fattened under ORS than those under KS, but differences were statistically significant only in the Trial I. The share of thighs in Trials I and II did not differ significantly between lighting programs, while in the Trial III it was higher under ORS than under KS (P<0.01). Effect of stocking density and feed density on the share of drumsticks and thighs was not determined. Higher share of drumsticks was determined in male chicken while in female, the share of thighs was higher.Relative values of conformation measures were not influenced by the light programs and feed density, except that in lower stocking density the relative value of the breast depth was higher (P<0.05). Effect of light and feed density on feet pads damage was not determined, but chicken in higher stocking density, as of 28th day, had significantly higher feet pad damage than those in lower stocking density.Light program and stocking density did not have an effect on physical properties of femur: cross-sectional area, breaking force and specific breaking force. Male chicken had larger cross-sectional area and femur breaking force, differences in cross-sectional area were statistically significant, but this was not the case with the breaking force.Percentage of fat in dark meat was higher and that of proteins lower under ORS than under KS. Other parameters of the chemical analysis of dark and white meat were not under the influence of the light programs. Feed density had no effect on chemical composition of breasts and thighs meat.Based on all stated above, it can be concluded that all three factors (light program, feed density and stocking density) as well as their interactions had effect on numerous production parameters and quality of broiler meat, including on their welfare in different fattening phases. Taking into account enormous differences in effects that may be achieved in different combinations of these factors, the results of these and similar researches should make easier the selection of the technology that would yield the best economic effects in chicken fattening. Furthermore, where results are unclear or contradictory, further research should be conducted on a larger number of animals and focus on economically more significant production and slaughterhouse characteristics of chicken.
Wang, Ding. "Long-term effects of different fat sources and vitamin E supplementation on growth performance, antioxidant status, carcass characteristics, meat quality, and immune capacity of pigs with heavy slaughter weight up to 150 kg." UKnowledge, 2019. https://uknowledge.uky.edu/animalsci_etds/100.
Повний текст джерелаNenad, Katanić. "Повезаност особина из перформанс теста назимица са величином легла код крмача". Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2016. https://www.cris.uns.ac.rs/record.jsf?recordId=101699&source=NDLTD&language=en.
Повний текст джерелаIspitivanje povezanosti osobina iz performans testa nazimica saveličinom legla krmača, obavljeno je na sedam genotipova životinja (čistihrasa: danski landras, holandski landras, nemački landras, švedski landras iveliki jorkšir i programskih meleza: meleza čija je majka landras i meleza čijaje majka veliki jorkšir).Fenotipska povezanost osobina iz performans testa (ekterijer, masa nakraju testa, starost na kraju testa, dnevni prirast u testu, debljina slanineu slabinskom delu, debljina slanine u leđnom delu, dubina MLD-a, broj legla,priplodna vrednost nazimica procenjena selekcijskim indeksom i procenat mesau trupu) i dva osnovna reproduktivna parametra (broj živorođene prasadi i brojzalučene prasadi), statistički je analizirana softverskim paketom „Statistika13“ i „SPSS verzija 23“. Ispitano je postojanje/nepostojanje uticaja svakepojedinačne osobine iz performans testa na reproduktivne osobineNije utvrđena opšta povezanost svih osobina performans testa ireproduktivnih osobinaAnalizirane osobine pokazale su veliku zavisnost od genotipaispitivanih životinja.
Carlsson, Louise. "Identifying variation in the OMT gene in Pisum sativum and its relevance regarding protein content." Thesis, Linköpings universitet, Biologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148621.
Повний текст джерелаDragana, Ljubojević. "Коришћење репичиног уља у исхрани шарана и лињака као фактора промене квалитета меса". Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2014. https://www.cris.uns.ac.rs/record.jsf?recordId=100321&source=NDLTD&language=en.
Повний текст джерелаMeso šarana, najzastupljenije vrste ribe na ribnjacima uRepublici Srbiji, ali i drugih ciprinidnih vrsta, predstavljaznačajan nutritivni izvor n-3 visoko nezasićenih masnih kiselina,koje imaju važnu ulogu na zdravlje ljudi. U radu su ispitanifaktori koji deluju na hemijski i masnokiselinski sastav mesašarana i drugih ciprinidnih vrsta koje se gaje na području Srbije.Ustanovljeno je da je sadržaj masti i masnokiselinski sastav ribasu pod uticajem vrste ribe, čak i kada pripadaju istoj familiji,različitih faktora životne sredine, načina gajenja, a posebnonačina ishrane. Utvrđen je značaj dobre tehnologije proizvodnje naribnjaku za odgovarajuću strukturu planktonskih i bentosnihorganizama, što igra veliku ulogu u dobijanju mesa šarana, ali idrugih ciprinidnih vrsta, koje se mogu gajiti u polikulturi sanjim, dobrog hemijskog i masnokiselinskog sastava. Ukazano je naznačaj koji formulisane smeše imaju u ishrani riba na njihovozdravstveno stanje, proizvodne parametre i kvalitet mesa. Izvršenoje ispitivanje zamene komponenti animalnog porekla saalternativnim komponentama biljnog porekla i dobijeni suzadovoljavajući rezultati u pogledu proizvodnih performansi iumerenih promena kvaliteta mesa, kada je u pitanju masnokiselinskiDVM Dragana LJubojevićKorišćenje repičinog ulja u ishrani šarana i linjaka kao faktora promena kvaliteta mesaiiisastav. Analizom sedimenta, vode u ribnjacima, kao i mesa riba izribnjaka i otvorenih voda ustanovljen je stepen zagađenosti životnesredine. Predstavljen je novi proizvod od mesa šarana i drugihciprinidnih riba. Po prvi put je uspostavljena ćelijska kulturamasnog tkiva šarana, koja omogućava analiziranje molekularnih ibiohemijskih mehanizama koji se ne mogu izučavati na živimribama, koji nastaju kao posledica promena u ishrani.
Meat of common carp, the most common fish species which is farmed inthe Republic of Serbia and meat of other cyprinid species, represent animportant nutritional source of n-3 highly unsaturated fatty acids, whichplay an important role in human health. This paper examined the factorsthat affect the chemical and fatty acid composition of carp and othercyprinid species that are grown in Serbia. It was found that the fat contentand fatty acid composition of fish are influenced by fish species, evenwhen they belong to the same family, and also by different environmentalfactors of cultivation, especially by diet. It was established the importanceof proper rearing technology in the pond for the appropriate structure ofplanktonic and benthic organisms, which play a significant role in gettingcarp meat, and meat of other cyprinid species that can be grown inpolyculture with carp of desirable chemical and fatty acid composition. Itwas pointed out on the significance of formulated feed mixtures in fishnutrition on fish health, production parameters and meat quality. Aninvestigation was done on replacing components of animal origin withalternative components of plant origin and satisfactory results wereobtained in terms of production performance and moderate changes in thequality of meat, regarding to fatty acid composition. The degree ofenvironmental pollution was established by analysis of sediment andwater in the ponds, and the flesh of fish from ponds and open water. Thenew food product made from fish meat was presented. For the first time, itwas established cell cultures carp preadipocytes, which allows analysis ofthe molecular and biochemical mechanisms that arise as a result ofДВМ Драгана Љубојевић
Bibiano, Líllian Beatriz Januario. "Análise de ligação do gene de resistência Zym-2 com marcadores microssatélites e reação de acessos de meloeiro ao Zucchini yellow mosaic virus (ZYMV)." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11135/tde-27062016-102923/.
Повний текст джерелаViruses cause significant losses in the melon crop. Among these, Zucchini yellow mosaic virus (ZYMV) is of great importance and is ubiquitous in cucurbit crops. The control of this virus through genetic resistance is the most efficient management strategy. PI414723 is the only source of resistance to ZYMV in melon. This resistance is oligogenic and is supposed to be conditioned by three dominant genes: Zym-1, Zym-2 and Zym-3. While the chromosomal location of Zym-1 gene has been determined to be close to the CMAG36 marker in linkage group 2, the location of Zym-2 still lacks experimental confirmation, although there is some preliminary evidence that it is located in the linkage group 10 (LGX). Thus, one objective of this study was to confirm the chromosomal location of Zym-2 through linkage analysis with microsatellite markers (SSRs). To this, F2 plants population derived from the cross PI414723 x \'Védrantais\' were used as a segregating population. The plants were mechanically inoculated twice with isolate RN6-F, pathotype 0, at an interval of 24h. Confirmation of the infection and the quantification of viral titers in F2 plants were conducted using the PTA-ELISA technique. Plant genomic DNA was extracted from the first true leaf and used in PCR reactions using specific primers for selected SSRs belonging to LGX. An asymmetric distribution of absorbance classes was observed as well as a higher frequency of F2 individuals in the classes with lower values (0.1 to 0.2), confirming the presence of the major gene Zym-1. The chi-square test showed that all markers segregated according to the expected frequency (1: 2: 1), except for the CMCT134b marker. Linkage analysis among markers showed that the orders and distances between markers were consistent with published linkage maps. Linkage of Zym-2 to the markers was investigated by simple linear regression. Of the analyzed markers, the linear regression was significant for MU6549 and CMBR55, with p-values of 0.011 and 0.0054, respectively. Thus, the location of Zym-2 was determined in LGX. A second objective of the study was to evaluate the reaction to ZYMV of 42 melon accessions from the Northeastern Brazil, in order to discover new sources of resistance. For this, two experiments were conducted using the same inoculation and evaluation procedures previously described. The mean viral titer between accessions ranged from 0.123 to 0.621 in experiment 1 and between 0.019 to 0.368 in the experiment 2. Some accessions consistently showed low viral titers, similar to the resistant access PI414723 and the negative controls (non-inoculated plants of the cultivar \'Védrantais\'). Therefore, these accessions are potential sources of resistance to be employed in breeding programs.
Vermassen, Aurore. "Adaptation de Staphylococcus xylosus à la matrice carnée, impact des composés nitrosés et utilisation des sources de fer." Thesis, Clermont-Ferrand 2, 2014. http://www.theses.fr/2014CLF22535/document.
Повний текст джерелаStaphylococcus xylosus is used as starter culture in meat product for its role in the development of flavor and color. S. xylosus is characterized for its technological properties in vitro. However, the molecular mechanisms for its adaptation in meat with or without nitrate and nitrite, frequently added in meat product, remained unknown. Global transcriptomic approaches were carried out to determine the molecular mechanisms. S. xylosus modulated the expression of 55 % of the genes to survive in a meat model. Many genes encoding proteins involved in glucose and gluconate catabolisms and peptidases were up expressed. In parallel, a lot of genes involved in amino acids synthesis were down regulated, probably due to their availability in the meat model. The meat model is a rich medium composed of various substrates and S. xylosus adapted its physiology through the transcriptional regulators CcpA and CodY. Finally, it responded to salt added in the meat model in overexpressing genes involved in mechanisms of osmoprotection, Na + and H + extrusion. S. xylosus modulated the expression of 24 % of the genes in presence of nitroso compounds in the meat model. These compounds generated a nitrosative stress. S. xylosus responded to this stress by over expressing genes involved in iron homeostasis through the derepression of the regulator Fur. It over expressed also genes encoding antioxidant enzymes through the derepression of the regulator PerR. Moreover, it over expressed genes involved in DNA and proteins repairs. Meat is rich in hemic and non-hemic iron. S. xylosus is able to grow in presence of ferritin, transferrin and potentially hemoproteins. Ferritin is one of preferential iron sources. An operon encoding potentially a membranous complex involved in oxydo-reduction reactions has been identified. A strain defective in the first gene of the operon confirmed that this complex could contribute to the iron acquisition from ferritin. This study revealed a global change in the gene expression of S. xylosus in the meat model; it highlighted ability of S. xylosus to mitigate nitrosative or osmotic stress, it characterised for the first time the capacity of a Staphylococcus to acquire ferritin-iron
Boiago, Marcel Manente [UNESP]. "Características produtivas e qualitativas da carne de frangos alimentados com diferentes concentrações e fontes de selênio." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/96584.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Esse experimento objetivou avaliar o desempenho, rendimento de carcaça e características qualitativas da carne do peito de frangos de corte alimentados com dietas suplementadas com diferentes concentrações (0,3 e 0,5 mg/kg de ração) e fontes (orgânica e inorgânica) de Selênio, sendo o Sel-Plex TM e o selenito de sódio as fontes utilizadas. Utilizou-se 1050 aves (machos), que receberam rações isoproteicas e isoenergéticas em todas as fases de criação (1 a 21, 22 a 35 e 36 a 42 dias). Foi utilizado o esquema fatorial 2X2 + 1 (2 concentrações X 2 fontes de Se + controle) em delineamento inteiramente casualizado, com 5 tratamentos e 7 repetições, com 30 aves por parcela. A viabilidade foi melhorada com a suplementação da ração com Selênio, independente da fonte utilizada. No período de 1 a 21 dias, a suplementação melhorou o desempenho das aves, através de menor conversão alimentar.Porém, nos períodos de 1 a 35 e 1 a 42 dias o consumo de ração e o ganho de peso pioraram com a suplementação. Das fontes utilizadas, a orgânica promoveu melhora significativa no desempenho das aves em todos os períodos, sendo que os melhores resultados foram obtidos com a concentração de 0,5 mg de Se/kg de ração. Nenhum dos fatores influenciou o rendimento de carcaça e cortes. A utilização da fonte orgânica ao invés da inorgânica diminuiu a taxa de oxidação da carne do peito das aves armazenada por 7 e 15 dias a 4ºC, além de ocasionar menor luminosidade e maior pH. Houve influência das fontes e das concentrações sobre a deposição de selênio na carne, sendo a fonte orgânica superior à inorgânica e o nível de 0,5 superior ao de 0,3 mg de Se/kg de ração. A concentração de 0,5 mg de Se/kg de ração na dieta proporcionou aumento da porcentagem de cinzas na carne.
This study was conducted to evaluate the effect of different concentrations (0,3 and 0,5 mg/kg) and sources (organic and inorganic) of selenium on performance, carcass and parts yield and breast meat quality of broilers (Cobb 500). 1050 one-day-old male chicks were distributed in a completely randomized design in a 2x2+1 factorial arrangement (2 concentrations, 2 sources and 1 control diet), with 7 repetitions per treatment and 30 birds per replicate. The experiment lasted 42 days and the diet for each phase (1-21, 1-35 and 1-42 days) were corn-soybean meal based. The results showed better viability when the supplemented diets were used, independent of the source. In the first period (1 to 21 days), the supplementation provided an improvement on performance, with better feed conversion. However, the results were different in the others breeding phases (1 - 35 and 1 - 42 days), with decrease (P<0,05) on feed intake and weight gain when the supplementation was used. The organic source (Sel-Plex®) provided better results when offered in the second concentration (0,5 mg/kg). None of the factors influenced the carcass and parts yields. The organic source provided a significant decrease in the meat oxidation when it was stored for 7 and 15 days (4ºC). The lightness tended to decrease and the pH tended to increase when the Se-enriched-yeast (Sel-Plex®) was used. There were source and concentration effects on the meat selenium deposition, being the organic source better than the inorganic source (sodium selenite) and the second concentration (0,5 mg/kg) better than the first (0,3 mg/kg).The concentration of 0,5 mg/kg provided increase of the percentage of ashes in the meat.
Boiago, Marcel Manente. "Características produtivas e qualitativas da carne de frangos alimentados com diferentes concentrações e fontes de selênio /." Jaboticabal : [s.n.], 2006. http://hdl.handle.net/11449/96584.
Повний текст джерелаBanca: Alexandre Oba
Banca: Vera Maria Barbosa de Moraes
Resumo: Esse experimento objetivou avaliar o desempenho, rendimento de carcaça e características qualitativas da carne do peito de frangos de corte alimentados com dietas suplementadas com diferentes concentrações (0,3 e 0,5 mg/kg de ração) e fontes (orgânica e inorgânica) de Selênio, sendo o Sel-Plex TM e o selenito de sódio as fontes utilizadas. Utilizou-se 1050 aves (machos), que receberam rações isoproteicas e isoenergéticas em todas as fases de criação (1 a 21, 22 a 35 e 36 a 42 dias). Foi utilizado o esquema fatorial 2X2 + 1 (2 concentrações X 2 fontes de Se + controle) em delineamento inteiramente casualizado, com 5 tratamentos e 7 repetições, com 30 aves por parcela. A viabilidade foi melhorada com a suplementação da ração com Selênio, independente da fonte utilizada. No período de 1 a 21 dias, a suplementação melhorou o desempenho das aves, através de menor conversão alimentar.Porém, nos períodos de 1 a 35 e 1 a 42 dias o consumo de ração e o ganho de peso pioraram com a suplementação. Das fontes utilizadas, a orgânica promoveu melhora significativa no desempenho das aves em todos os períodos, sendo que os melhores resultados foram obtidos com a concentração de 0,5 mg de Se/kg de ração. Nenhum dos fatores influenciou o rendimento de carcaça e cortes. A utilização da fonte orgânica ao invés da inorgânica diminuiu a taxa de oxidação da carne do peito das aves armazenada por 7 e 15 dias a 4ºC, além de ocasionar menor luminosidade e maior pH. Houve influência das fontes e das concentrações sobre a deposição de selênio na carne, sendo a fonte orgânica superior à inorgânica e o nível de 0,5 superior ao de 0,3 mg de Se/kg de ração. A concentração de 0,5 mg de Se/kg de ração na dieta proporcionou aumento da porcentagem de cinzas na carne.
Abstract: This study was conducted to evaluate the effect of different concentrations (0,3 and 0,5 mg/kg) and sources (organic and inorganic) of selenium on performance, carcass and parts yield and breast meat quality of broilers (Cobb 500). 1050 one-day-old male chicks were distributed in a completely randomized design in a 2x2+1 factorial arrangement (2 concentrations, 2 sources and 1 control diet), with 7 repetitions per treatment and 30 birds per replicate. The experiment lasted 42 days and the diet for each phase (1-21, 1-35 and 1-42 days) were corn-soybean meal based. The results showed better viability when the supplemented diets were used, independent of the source. In the first period (1 to 21 days), the supplementation provided an improvement on performance, with better feed conversion. However, the results were different in the others breeding phases (1 - 35 and 1 - 42 days), with decrease (P<0,05) on feed intake and weight gain when the supplementation was used. The organic source (Sel-Plex®) provided better results when offered in the second concentration (0,5 mg/kg). None of the factors influenced the carcass and parts yields. The organic source provided a significant decrease in the meat oxidation when it was stored for 7 and 15 days (4ºC). The lightness tended to decrease and the pH tended to increase when the Se-enriched-yeast (Sel-Plex®) was used. There were source and concentration effects on the meat selenium deposition, being the organic source better than the inorganic source (sodium selenite) and the second concentration (0,5 mg/kg) better than the first (0,3 mg/kg).The concentration of 0,5 mg/kg provided increase of the percentage of ashes in the meat.
Mestre
Marijana, Gorjanac Ranitović. "Neke klase planarnih mreža i intervalno-vrednosni rasplinuti skupovi." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=93345&source=NDLTD&language=en.
Повний текст джерелаIn this thesis the following problem was investigated: Under which conditions an interval-valued fuzzy set can be reconstructed from the given family of cut sets.We consider interval-valued fuzzy sets as a special type of lattice-valued fuzzy sets and we studied properties of lattices of intervals using four different lattice order: componentwise ordering, imprecision ordering (inclusion of sets), strong and lexicographical ordering.We proposed new definitions of meet-between planar and join - between planar lattices, we investigated their properties and used them for solving problem of synthesis in interval-valued fuzzy sets.It has been proven that finite meet- between planar lattices and slim lattices are equivalent, and dually: finite join- between planar lattices and dually slim lattices are equivalent.Complete finitely spatial lattices and complete dually finitely spatial lattices are fully characterized in this setting. Next, we characterized lattices which can be orderembedded into a Cartesian product of n complete chains such that all suprema are preserved under the embedding.And dually, we characterized lattices which can be order embedded into a Cartesian product of n complete chains such that all infima are preserved under the embedding.We considered two types of cut sets – upper cuts and lower cuts.Solution of the problem of synthesis of interval-valued fuzzy sets are given for lattices of intervals under componentwise ordering for both types of cut sets. Solution of problem of synthesis of interval-valued fuzzy sets are given for lower cuts for lattices of intervals under imprecision ordering. Sufficient conditions are given for lattices of intervals under imprecision ordering and family of upper cuts.Sufficient conditions are also given for lattices of intervals under lexicographical ordering.The problem of synthesis of interval-valued fuzzy sets for lattices of intervals under strong ordering is beyond the scope of this thesis.A similar problem of synthesis of interval-valued intuitionistic fuzzy sets is solved for lattices of intervals under componentwise ordering.These results are mostly of theoretical importance in lattice theory and fuzzy sets theory, but also they could be applied in mathematical morphology and in image processing.
Mayer, Andrei Retamoso. "Características pós abate de novilhos terminados com grão de aveia branca e/ou casca do grão de soja." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/10814.
Повний текст джерелаThe aim of this study was to evaluate the effect of oat grain in relation to soybean hulls and mixtures thereof, as an energy source, the components are not part and carcass characteristics and meat quality of feedlot steers. We used 36 castrated male cattle, originated from the crossing between Charolais x Nellore, age and average final weight of 356.4 kg and 24 months, respectively. The animals were distributed in treatments, as the energy source in the concentrate fraction of the diet with oat grain, soybean hulls or mixture of oat grain and soybean hulls (1:1). The experimental design was a randomized block design with three treatments and 12 experimental units per treatment, each animal an experimental unit. With respect to fat accumulation renal, inguinal, and ruminal set of total fat, there was a significant effect (P <0.05), and the amount of fat and total renal treatments mixture of animal and soybean hulls top the oat. For the other components are not part of the carcass showed no difference between the different energy sources (P> 0.05). As for the effects of energy sources on the quantitative characteristics of the carcass, only differ with regard to the conformation (P <0.05). Since the housing steers the treatments of soybean hulls and oat were carcasses regular conformation and secondly mixing carcasses showed good conformation. The amount of fat was higher in carcasses of animals fed soybean hulls and mixing with respect to oat (P <0.05), there was an inverse relationship to muscle/fat. Regarding the cooling time of housing in the region Longissimus dorsi muscle during periods of 0, 12 and 24 hours there was no significant difference between the pH and temperature (P> 0.05). The pH of the muscle Recto femoralis, animals fed with a mixture of soybean hulls and oat (1:1) showed a lower pH at the time that the carcasses were placed (0 hour) and withdrawals (24 hours) camera cold (P <0.05). No significant values were checked for color, texture, marbling, thawing loss and cooking, organoleptic characteristics and shear force of beef from steers fed different energy sources (P> 0.05). The soybean hulls as the oat mixture between these and do not alter the main characteristics of the carcass and meat, so with different energy sources can be used in the diet of cattle, which benefit producer and refrigerator.
O objetivo do presente estudo foi avaliar o efeito do grão de aveia branca em relação à casca do grão de soja e suas misturas, como fonte energética, sobre os componentes não integrantes e as características da carcaça e qualidade da carne de novilhos terminados em confinamento. Utilizaram-se 36 bovinos machos castrados, oriundos do cruzamento entre as raças Charolês x Nelore, com idade e peso vivo médios finais de 24 meses e 356,4 kg, respectivamente. Os animais foram distribuídos nos tratamentos, conforme a fonte energética na fração concentrada da dieta, com grão de aveia branca, casca do grão de soja ou mistura do grão de aveia branca e da casca do grão de soja (na proporção 1:1). O delineamento experimental foi o de blocos ao acaso, com três tratamentos e 12 unidades experimentais por tratamento, sendo cada animal uma unidade experimental. Com relação ao acúmulo de gordura renal, inguinal, ruminal e conjunto das gorduras totais, observou-se efeito significativo (P<0,05), sendo a quantidade de gordura renal e total dos animais dos tratamentos mistura e casca do grão de soja superior à aveia branca. Para os demais componentes não integrantes da carcaça não observou-se diferença entre as diferentes fontes energéticas (P>0,05). Quanto aos efeitos das fontes energéticas sobre as características quantitativas da carcaça, apenas apresentaram diferença com relação à conformação (P<0,05). Sendo que a carcaça dos novilhos dos tratamentos casca do grão de soja e aveia branca tiveram carcaças de conformação regular e por outro lado a mistura apresentou carcaças de conformação boa. A quantidade de gordura foi maior nas carcaças dos animais dos tratamentos casca do grão de soja e mistura com relação à aveia branca (P<0,05), observou-se comportamento inverso para relação músculo/gordura. Com relação ao tempo de resfriamento da carcaça na região do músculo Longissimus dorsi, nos períodos de 0, 12 e 24 horas não ocorreu diferenças significativas entre o pH e temperatura (P>0,05). Quanto ao pH do músculo Recto femoralis, os animais alimentados com mistura de casca do grão de soja e aveia branca (1:1) apresentaram menor pH no momento que as carcaças foram colocadas (0 hora) e retiradas (24 horas) da câmera fria (P<0,05). Não foram verificados valores significativos para cor, textura, marmoreio, perdas ao descongelamento e a cocção, características organolépticas e força de cisalhamento da carne de novilhos alimentados com diferentes fontes energéticas (P>0,05). A casca do grão de soja como a aveia branca e a mistura entre essas não alteram as principais características da carcaça e da carne, portanto as fontes energéticas estudadas podem ser utilizadas na dieta de bovinos, as quais beneficiam produtor e frigorífico.
ENARD, CORINE. "L'assimilation du fer chez la souche 3937 d'erwinia chrysanthemi met en jeu un systeme a haute affinite dependant d'un siderophore de type catechol : son role dans le pouvoir pathogene sur saintpaulia." Paris 11, 1990. http://www.theses.fr/1990PA112179.
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