Добірка наукової літератури з теми "Liquame bovino"
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Статті в журналах з теми "Liquame bovino"
YaYa, Aboubakar, B. Hamadou, Daouda Yaya, S. Abdoulkadiri, and François Thiaucourt. "Inoculation expérimentale de l'agent de la péripneumonie contagieuse bovine à des chèvres." Revue d’élevage et de médecine vétérinaire des pays tropicaux 53, no. 4 (April 1, 2000): 319. http://dx.doi.org/10.19182/remvt.9708.
Повний текст джерелаNiang, M., M. Diallo, Ousmane Cissé, Mamadou Koné, M. Doucouré, Dominique Le Grand, Valérie Balcer, and Laurence Dedieu. "Transmission expérimentale de la péripneumonie contagieuse bovine par contact chez des zébus : étude des aspects cliniques et pathologiques de la maladie." Revue d’élevage et de médecine vétérinaire des pays tropicaux 57, no. 1-2 (January 1, 2004): 7. http://dx.doi.org/10.19182/remvt.9908.
Повний текст джерелаSerrier, J., B. Savoye, C. Morice, M. Morisset, C. Beauvillain, D. Mariotte, and B. Le Mauff. "Hypersensibilité au liquide amniotique bovin, apport des tests biologiques." Revue Française d'Allergologie 61, no. 4 (May 2021): 261–62. http://dx.doi.org/10.1016/j.reval.2021.03.082.
Повний текст джерелаGUIGNOT, F. "Cryoconservation des embryons des espèces domestiques." INRAE Productions Animales 18, no. 1 (March 15, 2005): 27–35. http://dx.doi.org/10.20870/productions-animales.2005.18.1.3507.
Повний текст джерелаGaletto, A., W. Lopez, and E. Baumeister. "Compétitivité de la production laitière au Nicaragua : analyse de la productivité et des coûts dans les élevages laitiers et à viande de la région de Matagalpa." Revue d’élevage et de médecine vétérinaire des pays tropicaux 60, no. 1-4 (January 1, 2007): 133. http://dx.doi.org/10.19182/remvt.9965.
Повний текст джерелаCARLES, C., та B. RIBADEAU DUMAS. "Influence de la phosphorylation sur le comportement des peptides trypsiques de caséine β bovine en chromatographie liquide haute performance en phase inverse". Le Lait 66, № 3 (1986): 247–56. http://dx.doi.org/10.1051/lait:1986314.
Повний текст джерелаFAVERDIN, P., and C. LEROUX. "Avant-propos." INRAE Productions Animales 26, no. 2 (April 16, 2013): 71–76. http://dx.doi.org/10.20870/productions-animales.2013.26.2.3137.
Повний текст джерелаДисертації з теми "Liquame bovino"
Dubois, Véronique. "Préparation de peptides antimicrobiens à partir de l'hydrolyse enzymatique de deux protéines : l'hémoglobine bovine et l'α-lactalbumine bovine". Lille 1, 2006. https://ori-nuxeo.univ-lille1.fr/nuxeo/site/esupversions/5e3ef719-2eae-45e3-8aa5-e9c719abc31b.
Повний текст джерелаRochut, Nadège. "Analyse des somatotropines endogènes et recombinantes dans l'espèce bovine par chromatographie liquide couplée à la spectrométrie de masse en tandem : application au contrôle de leur utilisation illégale en élevage." Nantes, 2002. http://www.theses.fr/2002NANT2005.
Повний текст джерелаWithin the control of growth promoters illegally used in animal production, the french reference laboratory (LABERCA) has decided to direct one of its research topics towards the study of protein hormones : the somatropins. Mass spectrometry was used to determine exogenous character of recombinant somatotropins
Antignac, Jean-Philippe. "Dosage et étude du métabolisme des corticostéroi͏̈des dans l'espèce bovine par chromatographie liquide couplée à la spectrométrie de masse en tandem : application au contrôle de leur utilisation illégale en élevage." Nantes, 2001. http://www.theses.fr/2001NANT2078.
Повний текст джерелаFifty years after the discovery of natural corticosteroid hormones and their anti-inflammatory properties, many synthetic derivatives of these molecules are today available. Most of them are widely used in human and veterinary medicines, in a legal but regulated scope. These compounds are also susceptible to be used as growth promoters, this utilisation remaining illegal in Europe. Consequently, an analytical method dedicated to the control of the utilisation of corticosteroids in cattle has been developed. In this analytical way, the present study permitted to propose a method based on LC-MS/MS measurement of corticosteroid residues in urine, tissue and hair samples
Plante-Dubé, Marguerite, and Marguerite Plante-Dubé. "Impact d'un supplément alimentaire d'acide palmitoléique sur le profil en acides gras des classes lipidiques du liquide folliculaire chez la vache en début de lactation." Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/37597.
Повний текст джерелаLa fertilité de la vache laitière haute-productrice semble altérée par les teneurs élevées en acides gras (AG) libres du liquide folliculaire observées en début de lactation. Toutefois, les effets diffèreraient selon le type d’AG du microenvironnement de l’ovocyte. La présence d’AG monoinsaturés est associée à des ovocytes ayant un potentiel de développement embryonnaire amélioré. Cette étude visait à évaluer le transfert et l’incorporation des AG alimentaires dans les classes lipidiques du plasma et du liquide folliculaire et son impact sur la fertilité de la vache laitière. Vingt vaches Holstein ont été attribuées aléatoirement à un supplément lipidique alimentaire enrichi soit en acide palmitique (Palmit 80; 82 % 16:0; PA) ou en acide palmitoléique (huile d’argousier; 27 % 16:1 cis-9 et 28 % 16:0; POA). L’administration des traitements (200 g/jour) s’est échelonnée de 20 jours avant à 67 jours après le vêlage. Les performances ont été enregistrées et des échantillons de lait recueillis aux jours 8 à 10 ± 3, 35 à 37 ± 2 et 63 à 65 ± 2 post partum. Aux jours 46 et 67 ± 2 d post partum, les complexes ovocyte-cumulus, les cellules de la granulosa, le liquide folliculaire et des échantillons sanguins ont été prélevés. En comparaison avec PA, POA a augmenté les teneurs en 16:1 cis-9 dans les lipides estérifiés du plasma, dans la matière grasse laitière, et dans les AG libres et les esters de cholestérol du liquide folliculaire. L’expression du gène récepteur à l’insuline tendait à diminuer dans les cellules de la granulosa du groupe POA. Le supplément POA a réduit la folliculogenèse, sans toutefois influencer la compétence au développement des ovocytes. Il est possible de moduler le profil en AG du liquide folliculaire via des stratégies nutritionnelles et de potentiellement influencer le métabolisme des cellules de la granulosa et la folliculogenèse.
In high-yielding dairy cows, fertility is impaired by the increase of non-esterified fatty acid concentrations in follicular fluid during early lactation, but the effects may depend on fatty acid (FA) composition. The objective of this study was to evaluate the potential of dietary supplements enriched in specific FA to influence the FA composition of follicular fluid, and consequently fertility of early-lactation dairy cows. Twenty Holstein multiparous cows in late gestation were randomly assigned to 200 g/d of FA supplements enriched in i) palmitic acid (PA; control treatment; Palmit 80; Natu’oil Services Inc.; 82% 16:0) in the rumen or ii) palmitoleic acid (POA; Sea buckthorn oil; New Directions Aromatics Inc.; 27% cis-9 16:1, 28% 16:0, and 22% cis-9 18:1) in the abomasum. The treatment period ranged from 20 ± 5 d precalving to 67± 2 d postcalving. Performance was recorded, and milk samples collected from days 8 to 10 ± 3 (mean SD), 35 to 37 ± 2, and 63 to 65 ± 2 postcalving. On days 46 and 67± 2 d postcalving, cumulus-oocyte complexes, granulosa cells and follicular fluid were recovered, and blood was collected. Treatment did not affect milk yield or milk fat. Compared with PA, POA increased cis-9 16:1 concentration in milk fat, in plasma esterified lipid classes, and in follicular fluid non-esterified fatty acids and cholesterol esters. Abundances of mRNA for stearoyl-CoA desaturase and perilipin 2 in granulosa cells were not different between treatments. Moreover, POA treatment tended to decrease the expression of gene encoding for insulin receptor. Treatment did not affect oocyte quality and developmental capacity, or embryo lipid metabolism, but POA altered folliculogenesis. These results suggest that dietary lipid supplements enriched in specific FA may modulate FA profile of the oocyte microenvironment, energy granulosa cell metabolism and folliculogenesis in early lactation cows.
In high-yielding dairy cows, fertility is impaired by the increase of non-esterified fatty acid concentrations in follicular fluid during early lactation, but the effects may depend on fatty acid (FA) composition. The objective of this study was to evaluate the potential of dietary supplements enriched in specific FA to influence the FA composition of follicular fluid, and consequently fertility of early-lactation dairy cows. Twenty Holstein multiparous cows in late gestation were randomly assigned to 200 g/d of FA supplements enriched in i) palmitic acid (PA; control treatment; Palmit 80; Natu’oil Services Inc.; 82% 16:0) in the rumen or ii) palmitoleic acid (POA; Sea buckthorn oil; New Directions Aromatics Inc.; 27% cis-9 16:1, 28% 16:0, and 22% cis-9 18:1) in the abomasum. The treatment period ranged from 20 ± 5 d precalving to 67± 2 d postcalving. Performance was recorded, and milk samples collected from days 8 to 10 ± 3 (mean SD), 35 to 37 ± 2, and 63 to 65 ± 2 postcalving. On days 46 and 67± 2 d postcalving, cumulus-oocyte complexes, granulosa cells and follicular fluid were recovered, and blood was collected. Treatment did not affect milk yield or milk fat. Compared with PA, POA increased cis-9 16:1 concentration in milk fat, in plasma esterified lipid classes, and in follicular fluid non-esterified fatty acids and cholesterol esters. Abundances of mRNA for stearoyl-CoA desaturase and perilipin 2 in granulosa cells were not different between treatments. Moreover, POA treatment tended to decrease the expression of gene encoding for insulin receptor. Treatment did not affect oocyte quality and developmental capacity, or embryo lipid metabolism, but POA altered folliculogenesis. These results suggest that dietary lipid supplements enriched in specific FA may modulate FA profile of the oocyte microenvironment, energy granulosa cell metabolism and folliculogenesis in early lactation cows.
Schelcher, François. "Infection expérimentale par le virus respiratoire syncytial bovin : étude phénotypique des sous-populations lymphocytaires sanguines et du liquide de lavage bronchoalvéolaire." Toulouse, INPT, 1997. http://www.theses.fr/1997INPT014A.
Повний текст джерелаAkhiar, Afifi. "Caractérisation de la fraction liquide des digestats issus de la codigestion de résidus solides." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTS004/document.
Повний текст джерелаAgricultural and centralized biogas plants are facing a fast development, leading to the production of huge amounts of digestates. Whereas the solid fraction of digestates is used as fertilizer, the liquid fraction can be valorized by the recovery of mineral materials, although the presence of organic compounds may be problematic for the treatment and disposal of this effluent. The objectives of this thesis are: i) to characterize the liquid fraction of digestates and to provide guidelines for its further treatment, ii) to explain the variability of residual compounds in the liquid fraction of digestates in relation with substrate origin, process parameters and the type of solid-liquid separation. In a first part, eleven digestates from full scale codigestion plants were thoroughly characterized. Their liquid fractions were fractionated by nine successive filtrations, which allowed quantifying the contribution of suspended particles, coarse and fine colloids and dissolved matter on several physico-chemical and biological parameters. Organic compounds were mainly found in suspended particles (> 1.2 µm) and presented low aerobic biodegradability. To enlarge the data base, eighteen more digestates from codigestion and one digestate from waste activated sludge were characterized; their liquid fractions were fractionated by two successive filtrations (1.2 μm and 1 kDa). Principal component analysis, hierarchical clustering analysis and correlation matrix carried out on the 30 digestates set, highlighted the major impact of the solid-liquid separation process on the composition of the liquid fraction of digestates. In the high performance separation process group, subgroups allowed separating digestates from sewage sludge, digestates from pig manure and digestates from plug-flow thermophilic processes. In the low performance separation process group, COD and total solids concentration in the liquid fraction of digestates were correlated to the percentage of energy crops and cow manure in the feed. Finally, SUVA parameter which accounts for aromatic compounds content and the stabilization of organic matter, was correlated to the retention time in digester for the whole digestates set. To understand the origin of residual compounds in the liquid fraction of digestates from co-digestion of high proportions of cattle manure, four CSTR reactors fed with wheat straw, cow dung and cow manure were operated for 48 weeks. Anaerobic digestion performances showed that cow manure had undergone some aerobic degradation during its storage at the farm. Therefore, the liquid fraction of manure digestate had the highest concentrations in organic compounds. In addition, these organic compounds had the highest complexity measured by 3D fluorimetry. The low biodegradability of organic compounds and their high percentage in suspended particles suggest the development of physico-chemical separation process such as coagulation for the treatment of the liquid fraction of digestates
Piot, Jean-Marie. "Contribution à l'étude de la production et de la résolution d'un hydrolysat d'hémoglobine bovine : applications." Compiègne, 1989. http://www.theses.fr/1989COMPDE84.
Повний текст джерелаThis work, presented in publications form, concerns the study of production and resolution of an enzymatic hydrolysate from bovine haemoglobin. The first part describes the batch preparation of a peptic decolorized hydrolysate using either alumina or magnesia. Then a continuous production, at the pilot-plant scale, of a reproductible and decolorized peptic hydrolysate was perfected. Enzymatic hydrolysis of haemoglobin was performed in an ultrafiltration reactor equipped with mineral membranes. The reproductibility of the hydrolysate was demonstrated. The second part of this work concerns the analytical study of the peptidic hydrolysate. Chromatographic methods, first associating low pressure and HPLC, and then using HPLC alone, were performed in order to resolve these complex hydrolysates. These methods allowed us to obtain pure peptides. Mass spectrometry (FAB) and amino acid analysis were then performed in order to characterise and identify any purified peptide. Finally, an application of the hydrolysate, in the area of culture media for research, was presented
Lassiseraye, Danny. "Protéines du liquide séminal bovin et membranes lipidiques modèles : étude des interactions par titrage calorimétrique isotherme et spectroscopie infrarouge." Thèse, 2006. http://hdl.handle.net/1866/16793.
Повний текст джерелаOuellette, Yan. "Rôle du facteur de croissance transforming growth factor beta-1 (TGF[beta]1) dans la synthèse d'oestradiol par les follicules ovariens bovins." Thèse, 2003. http://hdl.handle.net/1866/14307.
Повний текст джерелаBourouah, Oussama. "Affinité et perturbation membranaire de la BSP1, une protéine du liquide séminal bovin: une étude avec des membranes lipidiques modèles." Thèse, 2020. http://hdl.handle.net/1866/23705.
Повний текст джерелаBSP1, the main protein in bovine seminal plasma, interacts with sperm membranes and plays a crucial role in events that lead to sperm fertility, during the capacitation. The purpose of this research is to investigate the nature of these interactions. This work aims to demonstrate the influence of the lipids that compose membranes on the action of the BSP1 protein. Using the intrinsic fluorescence of the protein, the affinity of the protein was characterized for four lipid systems. The results show that the lipid composition significantly affects the affinity of the protein for membranes. We observed the following order: 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) > POPC/1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine (POPE) ≈ POPC/1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoserine (POPS) > POPC/cholesterol. The protein interacts preferentially with POPC. The presence of POPE, POPS, or cholesterol in membranes decreases systematically the affinity. It is established that the presence of POPE or cholesterol increases the packing of lipids in membranes. This condensation effect could be detrimental to the insertion of the hydrophobic part of the protein into the membranes and reduces, as a consequence, the affinity. The decrease in protein affinity induced by the presence of POPS, a negatively charged lipid, could be associated with repulsive electrostatic interactions as the protein global charge is negative. The literature mentions that BSP1 selectively extracts choline phospholipids and cholesterol when combined with sperm membranes. A lipid efflux is also observed with model membranes. We characterized membrane "solubilisation" by BSP1, using dynamic light scattering. As a preliminary step, we studied how Triton X-100 detergent solubilizes membranes using this technique. The measurements showed that the lipid composition of the membranes does not affect the general solubilization/reconstitution mechanism of the model membranes (POPC, POPC/POPE, POPC/1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-(1-rac-glycerol) (POPG)). It is known that three different regions exist during the solubilization process for the different lipid systems: i) the detergent is distributed in the membranes, ii) a coexistence of membranes saturated with detergents and mixed phospholipid/Triton X-100 micelles and iii) exclusively mixed phospholipid/Triton X-100 micelles. Our results show that the conical shape of POPE increases the resistance of the membranes to solubilization. The presence of POPG, bringing a negative charge at the membrane interface, does not induce any change in solubilization/reconstitution processes. Dynamic light scattering also made it possible to observe if the BSP1 protein induces morphological changes in the membranes following its interaction with POPC membranes. Our observations showed no significant variation in particle size during the titration of POPC vesicles by the protein, over a molar ratio range of POPC/BSP1 from 20 to 0.6. Considering such different compositions, a transition from vesicles saturated with protein to protein complexes with some lipids is assumed. However, it appeared impossible with dynamic light scattering to differentiate these particles.