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Articoli di riviste sul tema "Eggshells Quality"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 19 febbraio 2022

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1

Radwan, Lamiaa M. "Eggshell quality: a comparison between Fayoumi, Gimieizah and Brown Hy-Line strains for mechanical properties and ultrastructure of their eggshells." Animal Production Science 56, no. 5 (2016): 908. http://dx.doi.org/10.1071/an14755.

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Abstract (sommario):
This experiment was designed to study the relationship between mechanical properties and ultrastructure of three genetic groups (Fayoumi, Gimieizah and Brown Hy-Line strains). To assess eggshell mechanical parameters a total of 120 eggs from each strain was used. This study suggested predicting the mechanical properties and ultrastructure of eggshells when egg weight was equal for the three strains (39.8 g). There was a significant difference among strains for shell thickness, eggshell breaking strength and stiffness, with the Fayoumi eggshells recording the highest values compared with other
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2

Ketta, Mohamed, Eva Tůmová, Michaela Englmaierová, and Darina Chodová. "Combined Effect of Genotype, Housing System, and Calcium on Performance and Eggshell Quality of Laying Hens." Animals 10, no. 11 (November 16, 2020): 2120. http://dx.doi.org/10.3390/ani10112120.

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Abstract (sommario):
The objective of this study was to evaluate hen performance and eggshell quality response to genotype, housing system, and feed calcium (Ca) level. For this purpose, an experiment was conducted on 360 laying hens of ISA Brown, Bovans Brown (commercial hybrids), and Moravia BSL (traditional Czech hybrid). Laying hens were kept in enriched cages and on littered floor and fed similar feed mixtures with different Ca content (3.00% vs. 3.50%). In terms of hen performance, ISA Brown had the highest egg production (84.2%) compared to Moravia BSL (74.3%) and Bovans Brown (71.4%). Regarding eggshell qu
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3

Lichovníková, M., and L. Zeman. "Effect of housing system on the calcium requirement of laying hens and on eggshell quality." Czech Journal of Animal Science 53, No. 4 (April 4, 2008): 162–68. http://dx.doi.org/10.17221/375-cjas.

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Abstract (sommario):
The effects of housing systems on the calcium requirement for eggshell production, eggshell quality and on the breaking strength of the hen’s tibia were evaluated. Unenriched cages (UN) (24 laying hens), enriched cages (EN) (16 laying hens) and floor system (FS) (24 laying hens) were used in this experiment. The eggshell production of laying hens from 19 to 66 weeks of age was higher (<I>P</I> < 0.01) in the cage systems (UN 39.6 g/hen/week and EN 39.2 g/hen/week) than it was in FS (35.0 g/hen/week). Consequently, the amount of calcium deposited in the eggshells (g/hen/week) was
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4

Oviasogie, Efosa F., Blessing I. Ogboghodo, A. Beshiru, Osahon B. Omoregie, Providence Ogofure, and Goodness A. Ogofure. "The microbial burden load of eggshells from different poultry rearing systems in Ekosodin Village, Edo State, Nigeria." Journal of Applied Sciences and Environmental Management 20, no. 2 (July 25, 2016): 227–31. http://dx.doi.org/10.4314/jasem.v20i2.1.

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Eggs are valuable source of food used throughout the world to feed the ever growing world population. Majority of freshly laid eggs are sterile, however, the shells soon become contaminated with litter droppings and dust present in the environment. In this study, the microbial load of egg shell from different poultry system in Ekosodin, Edo State was evaluated. The results obtained from the study revealed that eggshell samples from different poultry rearing systems (battery cage, deep litter and free-range chicken eggs) were contaminated with bacterial and fungal species of public health conce
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5

Umbraško, Inta, Aleksandrs Petjukevičs, Anna Batjuka, and Nadežda Harlamova. "EVALUATION OF CALCIUM CARBONATE CONTENT IN EGGSHELLS OF AVIAN, TURTLE, SNAIL, AND OSTRICH USING CHEMICAL ANALYSIS AND SCANNING ELECTRON MICROSCOPY." ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 16, 2021): 244–49. http://dx.doi.org/10.17770/etr2021vol1.6652.

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In the present study, different eggs were collected and analyzed from five various animal species: European pond turtle (Emys orbicularis (Linnaeus, 1758)), giant African land snail (Achatina fulica (Bowdich, 1822)), common ostrich (Struthio camelus (Linnaeus, 1758)), white, light-brown, and dark-brown laying hen (Gallus gallus domesticus (Linnaeus, 1758) and European quail (Coturnix coturnix (Linnaeus, 1758). The typical mineral shell mainly composed of the calcite polymorph of CaCO3 but the eggshell consists of membranes, that composed mainly of proteins. The shell quality also could be assi
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6

Tomczyk, Łukasz, Łukasz Stępień, Monika Urbaniak, Tomasz Szablewski, Renata Cegielska-Radziejewska, and Kinga Stuper-Szablewska. "Characterisation of the Mycobiota on the Shell Surface of Table Eggs Acquired from Different Egg-Laying Hen Breeding Systems." Toxins 10, no. 7 (July 16, 2018): 293. http://dx.doi.org/10.3390/toxins10070293.

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Abstract (sommario):
Microbial safety is an important factor contributing to the egg quality. During egg acquisition, there is significant risk of contamination of the eggshell surface with microscopic fungi. Mycelial hyphae may grow on the eggshell surface and penetrate into the egg content. However, there is no information on the populations of microscopic fungi on the eggshell surface and, consequently, on possible production of mycotoxins. Therefore, the aim of the study was to identify the species of microscopic fungi present on the eggshell surface acquired from different breeding systems and to measure the
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7

Sanuriza, Irna Il, and Dwi Kartika Risfianty. "Limbah Cangkang Telur Ayam Ras (Gallus Domesticus) Sebagai Bahan Pupuk Untuk Memperbaiki Sifat Kimia Tanah." Hydrogen: Jurnal Kependidikan Kimia 8, no. 2 (December 11, 2020): 67. http://dx.doi.org/10.33394/hjkk.v8i2.2928.

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Degradation of soil quality caused by the use of chemical fertilizers is a serious problem in agriculture. The use of environmentally friendly fertilizers is an important step to increase soil quality. One of them is by utilizing chicken eggshell waste as organic fertilizer. This study aims to utilize chicken eggshells with the right dose to improve soil quality. This research is a quantitative study using a completely randomized design. The results showed that the eggshell waste had the potential as an organic fertilizer to improve soil chemistry. Application of 6.25 gram egg shell/planting-h
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8

Hu, Xiaoqing, Xiaoying Sun, Shuanghua Luo, Shuyan Wu, Zhaojuan Chu, Xiujuan Zhang, Zhaojun Liu, et al. "Inactivation of Salmonella enterica Serovar Enteritidis on Chicken Eggshells Using Blue Light." Agriculture 11, no. 8 (August 10, 2021): 762. http://dx.doi.org/10.3390/agriculture11080762.

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Salmonella enterica serovar Enteritidis (S. Enteritidis) is a pathogen that poses a health risk. Blue light (BL), an emerging sanitization technology, was employed for the first time in the present study to inactivate S. Enteritidis on eggshell surfaces and its influence on maintaining eggshell freshness was investigated systematically. The results showed that 415 nm-BL irradiation at a dose of 360 J/cm2 reduced 5.19 log CFU/mL of S. Enteritidis in vitro. The test on eggshells inoculated with S. Enteritidis showed that a BL dose at 54.6 J/cm2 caused a 3.73 log CFU reduction per eggshell surfac
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9

Castro, Luciene da Silva, Audrei Giménez Barañano, Christiano Jorge Gomes Pinheiro, Luciano Menini, and Patrícia Fontes Pinheiro. "Biodiesel production from cotton oil using heterogeneous CaO catalysts from eggshells prepared at different calcination temperatures." Green Processing and Synthesis 8, no. 1 (January 28, 2019): 235–44. http://dx.doi.org/10.1515/gps-2018-0076.

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Abstract Biodiesel is a fuel from vegetable oil or animal fat, and is a promising substitute for petroleum-derived diesel. Transesterification is the most widely used method in biodiesel production. Eggshell is rich in calcium carbonate (CaCO3), and when it is subjected to heat treatment it results in calcium oxide (CaO). CaO from eggshells was prepared at different calcination temperatures, and characterized by X-ray diffraction, thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The obtained CaO was used as a catalyst. All catalysts showed good stability and excellent m
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10

Clímaco, Winnie Luiza dos Santos, Érica de Faria Melo, Diego Pereira Vaz, Mariana Masseo Saldanha, Maria Fernanda Vieira da Silva Pinto, Letícia Carolina Cleto Fernandes, Nelson Carneiro Baião, et al. "Eggshell microbiology and quality of hatching eggs subjected to different sanitizing procedures." Pesquisa Agropecuária Brasileira 53, no. 10 (October 2018): 1177–83. http://dx.doi.org/10.1590/s0100-204x2018001000011.

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Abstract: The objective of this work was to evaluate the effect of different disinfection procedures as alternatives to formaldehyde fumigation on eggshell microbial load and quality of eggs from a 42-week-old Cobb commercial breeder flock. A total of 10,080 clean eggs collected from the nests were randomly distributed in a randomized complete block design, among the following treatment groups: 13.33 g m-3 formaldehyde fumigation, 5-10 ppm ozone fumigation, 6.36 mW cm-2 UV-C light irradiation, spraying with 1.56% hydrogen peroxide, spraying with 0.13% peracetic acid, spraying with water (wet c
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11

Vlčková, J., E. Tůmová, M. Ketta, M. Englmaierová, and D. Chodová. "Effect of housing system and age of laying hens on eggshell quality, microbial contamination, and penetration of microorganisms into eggs." Czech Journal of Animal Science 63, No. 2 (January 21, 2018): 51–60. http://dx.doi.org/10.17221/77/2017-cjas.

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Hens of the laying hybrid ISA Brown were used in the study with the objective to evaluate eggshell quality, microbial contamination of eggshells, and penetration of microorganisms into the egg content in different housing systems (enriched cage: 60 hens, 10 hens per cage, 750 cm<sup>2 </sup>per hen vs free range: 60 hens, 9 hens per m<sup>2</sup>) and at different hen ages (26 vs 51 weeks) during storage time (0, 2, 7, 14, and 21 days). A significant interaction between the housing system and age was observed in egg weight and most of eggshell quality measurements. Howe
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12

Holveck, Marie-Jeanne, Romain Guerreiro, Philippe Perret, Claire Doutrelant, and Arnaud Grégoire. "Eggshell coloration indicates female condition during egg-laying: a field experiment in blue tits." Biological Journal of the Linnean Society 128, no. 1 (June 17, 2019): 181–200. http://dx.doi.org/10.1093/biolinnean/blz082.

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AbstractSeveral selection pressures may explain the evolution of avian eggshell coloration patterns. In cavity-nesting species, there are two main non-exclusive hypotheses. The sexually selected eggshell colour hypothesis proposes that eggshell coloration is a sexually selected signal of female and offspring quality used by males that influences paternal care or future re-mating decisions. The structural function hypothesis proposes that pigments help strengthen the eggshell and are present at higher levels and at the blunt end of the egg when females face calcium shortages. We tested whether
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13

Drabik, Kamil, Małgorzata Karwowska, Karolina Wengerska, Tomasz Próchniak, Agnieszka Adamczuk, and Justyna Batkowska. "The Variability of Quality Traits of Table Eggs and Eggshell Mineral Composition Depending on Hens’ Breed and Eggshell Color." Animals 11, no. 5 (April 22, 2021): 1204. http://dx.doi.org/10.3390/ani11051204.

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The aim of the study was to evaluate the relationship between the eggshell color parameters and its mineral composition as well as the internal quality of eggs derived from various breeds of hens, varied by eggshell color: seledine from Araucana, brown from Marans, and white from Leghorn. The sample consisted of 180 eggs (60/group) The eggshell color was measured using CIE L*a*b* system. The quality evaluation included traits of whole egg (weight, specific gravity, proportions of elements, shape index), yolk (weight, color, index, pH), albumen (weight, height, pH), and shell (color, strength,
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14

KEKLIK, NENE M., ALI DEMIRCI, PAUL H. PATTERSON, and VIRENDRA M. PURI. "Pulsed UV Light Inactivation of Salmonella Enteritidis on Eggshells and Its Effects on Egg Quality." Journal of Food Protection 73, no. 8 (August 1, 2010): 1408–15. http://dx.doi.org/10.4315/0362-028x-73.8.1408.

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Abstract (sommario):
The majority of Salmonella Enteritidis outbreaks have been related to the consumption of raw or undercooked eggs or egg-containing foods. Therefore, the U.S. Department of Agriculture mandates egg washing for all graded eggs by use of a detergent solution and sanitizer. These agencies and the egg industry have been investigating alternative decontamination techniques, which could better serve the public, minimize costs, and benefit both the public and the industry. Pulsed UV light is an emerging technology that is used to inactivate microorganisms quickly. In this study, the effectiveness of p
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15

Yi, X. J., A. Rehman, R. W. Akhtar, A. Abbas, K. Hussain, R. Yasin, H. M. Ishaq, et al. "Effects on egg production and quality of supplementing drinking water with calcium and magnesium." South African Journal of Animal Science 51, no. 4 (September 16, 2021): 469–76. http://dx.doi.org/10.4314/sajas.v51i4.7.

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This study was conducted to appraise the effects on egg quality and production performance of laying hens when drinking water was supplemented with calcium (Ca) and magnesium (Mg). A total of 384 (64-week-old) Hy-line Brown laying hens were assigned at random to four treatments, which consisted of CON: unsupplemented drinking water; T1: drinking water + 2 mg/L Ca + 250 mg/L Mg; T2: drinking water + 4 mg/L Ca + 510 mg/L Mg /10 L; and T3: drinking water + 5 mg/L Ca and 760 mg/L Mg. The experiment lasted six weeks. Water intake increased linearly in week 1 with the rising levels of Ca and Mg in t
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16

Seda Iflazoglu Mutlu, Ulku Gulcihan Simsek, Sera Iflazoglu, Aysen Yilmaz, Muhsin Mutlu, and Pinar Tatli Seven. "Impact of dietary calcium tetraborate supplementation on the mineral content of egg and eggshell of laying quails." GSC Biological and Pharmaceutical Sciences 15, no. 1 (April 30, 2021): 018–26. http://dx.doi.org/10.30574/gscbps.2021.15.1.0090.

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Boron (B) is a trace element that plays an important role in the mineral, cell membrane, hormone, and enzyme metabolism of animals and humans. The aim of this study was to examine the effect of dietary calcium tetraborate (CaB4O7) supplementation on the mineral composition of egg content and eggshell of laying quails. For this purpose, a total of 20 male and 40 female quails, 6-week-old, were equally divided into 2 groups (control and additive groups) in 5 replicates (6 birds/replicate) and given CaB4O7 300 mg/kg feed in additive group. The experiment was conducted for 56 days. The eggs were c
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17

Dávalos-Saucedo, Cristian, Giovanna Rossi-Márquez, Carlos Regalado-González, Maritza Alonzo-Macías, and Prospero Di Pierro. "Application of Transglutaminase Crosslinked Whey Protein–Pectin Coating Improves Egg Quality and Minimizes the Breakage and Porosity of Eggshells." Coatings 8, no. 12 (November 29, 2018): 438. http://dx.doi.org/10.3390/coatings8120438.

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It is well known that an effective way to improve the quality attributes of food is the use of coatings. Moreover, there is evidence of the use of dairy byproducts to design coatings to improve the shelf life of food products. This study was conducted to explore the effectiveness of a film forming solution containing whey protein–pectin complex enzymatically reticulated by transglutaminase (TGase) applied as a coating on eggshells to preserve the internal quality of eggs stored under environmental conditions (25 ± 1 °C and 35% HR) during 15 days storage. Eggs properties tested included yolk in
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18

Ketta, M., and E. Tumova. "Eggshell characteristics and cuticle deposition in three laying hen genotypes housed in enriched cages and on litter." Czech Journal of Animal Science 63, No. 1 (December 6, 2017): 11–16. http://dx.doi.org/10.17221/75/2017-cjas.

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The objective of the present study was to compare the eggshell characteristics and cuticle deposition of Lohmann Brown, Hy-Line Silver Brown, and Isa Brown layers kept in two different housing systems. The three laying hen genotypes were housed in enriched cages (100 hens, 750 cm<sup>2</sup>/hen, 10 hens/cage) and in littered pens (100 hens, 9 hens/m<sup>2</sup>, 10 hens/pen). The experiment was carried out in weeks 40–56 of hens age. Non-significant interactions of genotype and housing system for eggshell quality parameters and cuticle deposition were detected in this
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19

Ramzan, Faisal, Selina Klees, Armin Otto Schmitt, David Cavero, and Mehmet Gültas. "Identification of Age-Specific and Common Key Regulatory Mechanisms Governing Eggshell Strength in Chicken Using Random Forests." Genes 11, no. 4 (April 24, 2020): 464. http://dx.doi.org/10.3390/genes11040464.

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In today’s chicken egg industry, maintaining the strength of eggshells in longer laying cycles is pivotal for improving the persistency of egg laying. Eggshell development and mineralization underlie a complex regulatory interplay of various proteins and signaling cascades involving multiple organ systems. Understanding the regulatory mechanisms influencing this dynamic trait over time is imperative, yet scarce. To investigate the temporal changes in the signaling cascades, we considered eggshell strength at two different time points during the egg production cycle and studied the genotype–phe
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20

Lan, Ly Thi Thu, Nguyen Thi Hong Nhan, Lam Thai Hung, Tran Hoang Diep, Nguyen Hong Xuan, Huynh Tan Loc, and Nguyen Trong Ngu. "Relationship between plumage color and eggshell patterns with egg production and egg quality traits of Japanese quails." Veterinary World 14, no. 4 (April 14, 2021): 897–902. http://dx.doi.org/10.14202/vetworld.2021.897-902.

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Aim: This study was conducted to identify the diversity of feather color and to determine the relationship between plumage color and egg yield as well as eggshell patterns and internal egg quality traits of Japanese quails. Materials and Methods: For investigating phenotypic diversity, a total of 600 quails from five breeding farms were evaluated to record head feather, shank, and plumage color. An on-station experiment was also conducted on 360 laying quails to examine the relationship between plumage color and egg production and egg weight during 24 weeks of laying. Eggs collected during thi
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21

Lichovníková, M., L. Zeman, and J. Jandásek. "The effect of feeding untreated rapeseed and iodine supplement on egg quality." Czech Journal of Animal Science 53, No. 2 (February 7, 2008): 77–82. http://dx.doi.org/10.17221/330-cjas.

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The objective of the experiment was to evaluate the effect of the feeding of 80 g/kg (R8) and 100 g/kg (R10) of untreated rapeseed (RS) on egg quality including sensory quality in comparison with a control diet without rapeseed (R0). The addition of iodine (I) was also evaluated (1 mg/kg (R10) vs. 3 mg/kg (R10+I)). “Double zero” RS was used. The contents of energy and crude protein were almost the same in the diets. Laying hybrid ISABROWN was used in the experiment. The quality of eggs was analyzed 11 times every 28 days, from 19 to 64 weeks of age. 30 eggs per each group were always analyzed.
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22

Graveland, J. "Avian eggshell formation in calcium-rich and calcium-poor habitats: importance of snail shells and anthropogenic calcium sources." Canadian Journal of Zoology 74, no. 6 (June 1, 1996): 1035–44. http://dx.doi.org/10.1139/z96-115.

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Most passerines depend on the intake of calcium-rich material in addition to their normal food for proper eggshell formation and skeletal growth. A large proportion of Great Tits (Parus major) in forests on nutrient-poor soils in the Netherlands produce eggs with defective shells as a result of calcium deficiency. Eggshell defects are much scarcer near human settlements and do not occur on nutrient-rich soils. I investigated this variation in eggshell quality by examining the use of calcium-rich material by the birds. The results show that calcium-rich items in nest material and droppings can
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23

Skalická, M., B. Koréneková, P. Naď, and J. Šály. "Influence of Chromium and Cadmium Addition on Quality of Japanese Quail Eggs." Acta Veterinaria Brno 77, no. 4 (2008): 503–8. http://dx.doi.org/10.2754/avb200877040503.

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The experiment was conducted to evaluate the effect of chromium (Cr) and cadmium (Cd) on the quality of Japanese quail eggs. The birds (n = 60) were divided into 3 groups of 20 animals each. Group 1 was the control group. Group 2 was administered 0.12 mg Cr/day (Cr group) per quail in drinking water, whereas Group 3 was given a combination of 0.12 mg Cd and 0.12 mg Cr/ day (Cd-Cr group). The distribution of Cd in eggs, the egg mass, and the strength and thickness of shells was determined after after Day 35 and 58 of administration. Addition of Cr had a positive effect on the weight of eggs. A
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Berg, C., A. Blomqvist, L. Holm, I. Brandt, B. Brunström, and Y. Ridderstråle. "Embryonic exposure to oestrogen causes eggshell thinning and altered shell gland carbonic anhydrase expression in the domestic hen." Reproduction 128, no. 4 (October 2004): 455–61. http://dx.doi.org/10.1530/rep.1.00211.

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Eggshell thinning among wild birds has been an environmental concern for almost half a century. Although the mechanisms for contaminant-induced eggshell thinning are not fully understood, it is generally conceived to originate from exposure of the laying adult female. Here we show that eggshell thinning in the domestic hen is induced by embryonic exposure to the synthetic oestrogen ethynyloestradiol. Previously we reported that exposure of quail embryos to ethynyloestradiol caused histological changes and disrupted localization of carbonic anhydrase in the shell gland in the adult birds, imply
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Guo, Jun, Kehua Wang, Liang Qu, Taocun Dou, Meng Ma, Manman Shen, and Yuping Hu. "Genetic evaluation of eggshell color based on additive and dominance models in laying hens." Asian-Australasian Journal of Animal Sciences 33, no. 8 (August 1, 2020): 1217–23. http://dx.doi.org/10.5713/ajas.19.0345.

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Objective: Eggshells with a uniform color and intensity are important for egg production because many consumers assess the quality of an egg according to the shell color. In the present study, we evaluated the influence of dominant effects on the variations in eggshell color after 32 weeks in a crossbred population.Methods: This study was conducted using 7,878 eggshell records from 2,626 hens. Heritability was estimated using a univariate animal model, which included inbreeding coefficients as a fixed effect and animal additive genetic, dominant genetic, and residuals as random effects. Geneti
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Jevinová, Pavlina, Monika Pipová, Ivana Regecová, Soňa Demjanová, Boris Semjon, Slavomír Marcinčák, Jozef Nagy, and Ivona Kožárová. "Effect of Cladosporium cladosporioides on the Composition of Mycoflora and the Quality Parameters of Table Eggs during Storage." Processes 9, no. 4 (March 31, 2021): 613. http://dx.doi.org/10.3390/pr9040613.

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The eggshells of 120 experimental one-day-old table eggs were contaminated with the spore suspension of Cladosporium cladosporioides, divided into three groups (A–C) and stored at three different temperatures (3 °C, 11 °C and 20 °C) for 28 days. Visible growth of molds on/in experimental eggs was not observed within the entire storage period. No significant differences in the numbers of molds were found between particular groups of eggs. However, the composition of egg mycoflora was greatly influenced by storage conditions. Three mold genera were identified using the PCR method. The highest mo
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Cevoli, Chiara, Angelo Fabbri, Frédérique Pasquali, Annachiara Berardinelli, and Adriano Guarnieri. "HOT AIR TREATMENT, IN NATURAL CONVECTION CONDITIONS, FOR EGG SURFACE DECONTAMINATION." Journal of Agricultural Engineering 41, no. 4 (June 26, 2012): 23. http://dx.doi.org/10.4081/jae.2010.4.23.

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Abstract (sommario):
In order to improve the animal welfare, the Council Directive 1999/74/EC (defining minimum standards for the welfare of laying hens) will ban conventional cage systems from 2012, in favor of enriched cages or floor systems. As a consequence an increased risk of bacterial contamination of eggshells is expected. This has lead toward the development of efficient techniques to reduce eggshell contamination by bacterial pathogens, and thus to prevent any potential or additional food safety risk for Human health. The objectives of this research were to develop and validate a numerical model useful t
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Araujo, Jeovan A., Yvonne J. Cortese, Marija Mojicevic, Margaret Brennan Fournet, and Yuanyuan Chen. "Composite Films of Thermoplastic Starch and CaCl2 Extracted from Eggshells for Extending Food Shelf-Life." Polysaccharides 2, no. 3 (September 3, 2021): 677–90. http://dx.doi.org/10.3390/polysaccharides2030041.

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Abstract (sommario):
Calcium chloride (CaCl2) has been widely used to maintain the quality of fresh-cut fruits and vegetables because it stabilizes and strengthens the membrane system against fungal attacks. It is mainly applied via spray coating and dip coating techniques. This study explored a method of incorporating calcium chloride extracted from eggshells in a packaging material, thermoplastic starch (TPS), via a hot-melt extrusion process. The composites were characterized by FTIR, DSC, SEM-EDX and tensile testing. FTIR confirmed the chemical reactions between CaCl2 and TPS. DSC results showed a significant
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Krawczyk, Józefa, Zofia Sokołowicz, Sylwester Świątkiewicz, and Ewa Sosin-Bzducha. "Effect of outdoor access and increased amounts of local feed materials in the diets of hens covered by the gene-pool protection programme for farm animals in Poland on quality of eggs during peak egg production / Wpływ dostępu do wybiegu i zwiększonego udziału krajowych komponentów paszowych w żywieniu rodów kur objętych programem ochrony na jakość jaj w szczycie nieśności." Annals of Animal Science 13, no. 2 (March 1, 2013): 327–39. http://dx.doi.org/10.2478/aoas-2013-0013.

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Abstract (sommario):
Abstract The objective of the study was to test the hypothesis that eggs from native breed laying hens fed a diet containing increased amounts of local feed materials are not inferior in quality to eggs from laying hens receiving a standard diet but raised without outdoor access. The study involved Greenleg Partridge (Z-11) and Rhode Island Red hens (R-11). Within each breed, the control group (C) consisted of 60 hens kept on litter without outdoor access, stocked at 5 birds/m2 and fed a diet containing 65.3% of local feed materials. The experimental group (E) contained 60 layers maintained on
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30

Abdel-Wareth, Ahmed A. A., and Jayant Lohakare. "Moringa oleifera Leaves as Eco-Friendly Feed Additive in Diets of Hy-Line Brown Hens during the Late Laying Period." Animals 11, no. 4 (April 13, 2021): 1116. http://dx.doi.org/10.3390/ani11041116.

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Abstract (sommario):
This study investigated the dietary effects of Moringa oleifera leaves supplementation on egg quality, laying performance, excreta ammonia concentrations and serum biochemistry of laying chickens during the late laying period. A total of 240 64-week-old Hy-Line Brown hens were assigned to four treatment diets including Moringa oleifera leaves at 0, 3, 6 or 9 g/kg, respectively, for eight weeks. The treatments had twelve replicates with five hens each. The results revealed that incremental dietary Moringa oleifera leaves significantly increased (p < 0.01) egg weight, production, and mass thr
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31

Englmaierová, M., G. Dlouhá, M. Marounek, and M. Skřivan. " Efficacy of contrast levels of non-phytate phosphorus and Aspergillus niger phytase in hens fed wheat-maize-based diets." Czech Journal of Animal Science 57, No. 11 (November 5, 2012): 499–505. http://dx.doi.org/10.17221/6382-cjas.

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Abstract (sommario):
A 2 × 2 factorial design experiment examined the effect of dietary non-phytate phosphorus (NPP) (1.3 and 4.0 g/kg) and 3-phytase (F) (0 and 150 FTU/kg) on the performance indicators of hens, physical parameters of eggs, phosphorus (P) content of the eggshells, and the pH of the digestive tract of laying hens. Two hundred and forty hens (ISA Brown) were housed in enriched cages and fed a wheat-maize-based diet. A significant effect of both NPP and F was found for the yolk colour (P = 0.016) and shell thickness (P = 0.038). The F supplement or higher level of NPP alon
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32

Smaniotto, B. D., A. F. Amarante, R. Altarugio, I. G. O. Silva, I. M. O. Corrêa, L. Q. Pereira, M. M. P. Sartori, R. L. Andreatti Filho, P. T. C. Guimarães-Okamoto, and A. S. Okamoto. "Age influence on quality of shell and penetration in bacterial laying lightweight eggs." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 69, no. 5 (October 2017): 1301–10. http://dx.doi.org/10.1590/1678-4162-9341.

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Abstract (sommario):
ABSTRACT This study evaluated the influence of the bird’s age on the quality of the shell and percentage of bacterial penetration in commercial eggs. White-shelled commercial eggs were used, laid by light laying hens in their first laying cycle at 21, 39, 51, and 62 weeks of age. Shell quality evaluations comprised: egg weight, specific gravity, percentage and thickness of shell, number and size of pores. For evaluations regarding bacterial penetration, strains of several enterobacterias and one salmonella were used, all of which resistant to Nalidixic acid (100µg/ml). The method employed for
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33

Pasae, Yoel, Lyse Bulo, Karel Tikupadang, and Titus Tandi Seno. "The Use of Super Base CaO from Eggshells as a Catalyst in the Process of Biodiesel Production." Materials Science Forum 967 (August 2019): 150–54. http://dx.doi.org/10.4028/www.scientific.net/msf.967.150.

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Abstract (sommario):
The use of heterogeneous catalysts in the biodiesel production process provides advantages because it is easier in the catalyst separation process. One type of heterogeneous catalyst that can be used is CaO. The raw materials for CaO are abundant in nature and can be obtained from various sources including agricultural waste such as eggshells. The alkalinity level of CaO can be increased to super baser CaO through the activation process of CaO by using an ammonium carbonate solution. Super base CaO which is used as a catalyst for transesterification reaction in the production of biodiesel made
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34

Yusuf, Azhari, Norman Maulana Muhammad, Atiek Rostika Noviyanti, and Risdiana. "The Effect of Temperature Synthesis on the Purity and Crystallinity of Hydroxyapatite." Key Engineering Materials 860 (August 2020): 228–33. http://dx.doi.org/10.4028/www.scientific.net/kem.860.228.

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Abstract (sommario):
Hydroxyapatite (HA) is a calcium phosphate compound [Ca10(PO4)6(OH)2] which is non-toxic and has high biocompatibility. HA can be synthesized from natural basic ingredients with high calcium carbonate (CaCO3) content such as chicken eggshells. Here, we reported the synthesis of HA from chicken eggshells by hydrothermal methods. The effects of temperature synthesis of 120 °C and 230 °C on the purity and crystallinity were investigated in order to get information about best synthesis temperature for producing high quality of HA. The structure and crystallinity of HA were determined by XRD and FT
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35

Arnold, Marcellus, Yolanda Victoria Rajagukguk, and Anna Gramza-Michałowska. "Functional Food for Elderly High in Antioxidant and Chicken Eggshell Calcium to Reduce the Risk of Osteoporosis—A Narrative Review." Foods 10, no. 3 (March 19, 2021): 656. http://dx.doi.org/10.3390/foods10030656.

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Abstract (sommario):
The elderly population is increasing globally and is predicted to reach 1.5 billion in 2050. The quality of life of the elderly must be concerned, for example, with developing functional food for the elderly. In this article, the development of functional food to reduce the risk of osteoporosis in the elderly is reviewed. Oxidative stress is one of the factors which accelerates osteoporosis. Various antioxidants, including vitamin C, vitamin E, polyphenols, or lycopene, have been proven by former studies to have antioxidant activity, therefore, could reduce the risk of osteoporosis. Additional
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36

Alkan, Sezai, Ömer Ertürk, and İsmail Türker. "Determination of Microbial Activity and Quality Traits of Eggs Coated with Propolis." Turkish Journal of Agriculture - Food Science and Technology 8, no. 6 (June 26, 2020): 1380–84. http://dx.doi.org/10.24925/turjaf.v8i6.1380-1384.3385.

Testo completo
Abstract (sommario):
Eggs were coated with propolis in order to determine its effect on egg quality and total bacterial count. Effect of storage time prior to propolis coating was also studied. Eggs were obtained from a local farm, coated with 0, 3, 6 or 9% of propolis and stored at 4 ºC with a humidity of 75% for 30 days. A total of 18 eggs were used for egg quality traits and 6 eggs were chosen for microbial activity for each group. Bacteria were recovered with sterile cotton swabs from egg surfaces. Colonies with different morphology and color were detected. 11 bacterial species were determined following the ch
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37

Kobus-Cisowska, Joanna, Daria Szymanowska-Powałowska, Krystyna Szymandera-Buszka, Ryszard Rezler, Maciej Jarzębski, Oskar Szczepaniak, Grzegorz Marciniak, Anna Jędrusek-Golińska, and Małgorzata Kobus-Moryson. "Effect of fortification with calcium from eggshells on bioavailability, quality, and rheological characteristics of traditional Polish bread spread." Journal of Dairy Science 103, no. 8 (August 2020): 6918–29. http://dx.doi.org/10.3168/jds.2019-18027.

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38

Bidura, I. Gusti Nyoman Gde, Ni Wayan Siti, Desak Putu Mas Ari Candrawati, Eny Puspani, and Ida Bagus Gaga Partama. "Effect of Probiotic Saccharomyces spp. on Duck Egg Quality Characteristics and Mineral and Cholesterol Concentrations in Eggshells and Yolks." Pakistan Journal of Nutrition 18, no. 11 (October 15, 2019): 1075–83. http://dx.doi.org/10.3923/pjn.2019.1075.1083.

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39

I N. S., MIWADA, M. HARTAWAN, and I. K. SUKADA. "EVALUASI MIKROSTRUKTUR KULIT TELUR ITIK PASCA FORMULASI KHITOSAN-ASAP CAIR SELAMA PENGASINAN." Majalah Ilmiah Peternakan 21, no. 1 (February 28, 2018): 14. http://dx.doi.org/10.24843/mip.2018.v21.i01.p03.

Testo completo
Abstract (sommario):
This study aims at analyzing the ability of chitosan-formula liquid smoke to make innovation of curing timeswith penetration through the pores of duckling egg shells on the process of salting. A completely randomized design(CRD) was used with long curing treatment in 5, 10, 15, and 20 days. Besides, formula chitosan-liquid smoke with20 g/l and 3% concentration were used in this experiment. The results showed that the curing of time up to 15 daysgave the highest score (P<0.05) with good criteria. The quality of chemical in a long curing times gave significantdifferences (P<0.05) from indi
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40

Englmaierová, M., V. Skřivanová, and M. Skřivan. "The effect of non-phytate phosphorus and phytase levels on performance, egg and tibia quality, and pH of the digestive tract in hens fed higher-calcium-content diet." Czech Journal of Animal Science 59, No. 3 (March 18, 2014): 107–15. http://dx.doi.org/10.17221/7290-cjas.

Testo completo
Abstract (sommario):
The effect of three levels of non-phytate phosphorus (NPP) (3.0, 2.1, and 1.7 g/kg) and two levels of 3-phytase (F) (0 and 150 phytase units (FTU)/kg) together with a high dietary calcium concentration (approximately 41.0 g/kg) on the performance characteristics, egg quality, pH of the digestive tract, and tibia bone quality of ISA Brown hens housed in enriched cages was evaluated. The diets with 3.0 g/kg of NPP with and without F and 2.1 g/kg of NPP with 150 FTU of F significantly increased egg production (P = 0.022) and daily egg mass production (P = 0.030). A low level of NPP decreased (P &
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41

De Medina-Salas, Lorena, Mario Rafael Giraldi-Díaz, Eduardo Castillo-González, and Laura Elena Morales-Mendoza. "Valorization of Orange Peel Waste Using Precomposting and Vermicomposting Processes." Sustainability 12, no. 18 (September 16, 2020): 7626. http://dx.doi.org/10.3390/su12187626.

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Abstract (sommario):
The industrialization process of oranges generates waste, which is inadequately disposed of; this produces adverse effects on the environment. Among the alternatives for valorization is the vermicomposting process, which consists of the degradation of organic waste through the action of earthworms and microorganisms. Therefore, this research aimed to study this process using orange peel (OP) waste at the laboratory level. For this purpose, it was necessary to determine the degradation conditions through the monitoring of physicochemical parameters (temperature, pH, humidity, organic matter (OM
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42

Castillo-González, Eduardo, Mario Rafael Giraldi-Díaz, Lorena De Medina-Salas, and Marcela Patricia Sánchez-Castillo. "Pre-Composting and Vermicomposting of Pineapple (Ananas Comosus) and Vegetable Waste." Applied Sciences 9, no. 17 (August 31, 2019): 3564. http://dx.doi.org/10.3390/app9173564.

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Abstract (sommario):
In the last few years, pineapple (Ananas comosus) has grown to be considered one of the most important fruits worldwide due to its high production and consumption. However, inadequate disposal of the waste it generates, which represents up to 67% of its total weight, can have environmental impacts. Therefore, this study focuses on the degradation of organic waste produced in the industrialized processing of pineapple waste (rinds, crowns and cores), which undergo a process of vermicomposting at a laboratory level. The methodology used included the pre-composting process and vermicomposting thr
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43

Dantas, Naiara Silva Menezes, Luciene Almeida Siqueira de Vasconcelos, Pedro de Queiroz Costa Neto, and Felipe Faccini dos Santos. "Mold species and fungi load of washed and unwashed table eggs." Acta Veterinaria Brasilica 14, no. 4 (December 29, 2020): 286–90. http://dx.doi.org/10.21708/avb.2020.14.4.9480.

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Abstract (sommario):
Egg quality has been widely studied, mainly because defects in quality can pose risks to public health, as well as economic losses.Nevertheless, studies about fungiin eggsare scarce. The objective was to compare the fungal microbiota from washed and unwashed eggs in the rainy season and dry season of the year. This exploratory research consisted in the analysis of large size white table eggs acquired from 48 different lots. Two manufacturers were sampled considering the main characteristic of washed or unwashed eggs. From each lot, a 30-egg pack were purchased and six of those eggs were used f
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44

Oleforuh-Okoleh, V. U., U. M. Chukwuemeka, and G. O. Adeoye. "Influence of strain and production cycle on egg quality traits of two Nigerian indigenous chicken strains." Nigerian Journal of Animal Production 45, no. 2 (December 25, 2020): 29–39. http://dx.doi.org/10.51791/njap.v45i2.475.

Testo completo
Abstract (sommario):
Records obtained from purebred normal feather and naked neck Nigerian indigenous chicken strains were used to assess the influence of strain and production cycle on external and internal egg quality traits. The assessment commenced from first lay to 120 days of lay, classified into four production cycles (PC): PC1 (1-30 days of lays), PC2 (31-60 days of lays), PC3 (61-90 days of lays), and PC4 (91-120 days of lays). Mean egg weight, length and breadth were 4.34% heavier, 2.10% longer and 1.72% wider in the normal feather than in the naked neck (p<0.05). No disparity due to strain effect was
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45

Fardana, Dearestantrianto Hadits, Baginda Iskandar Moeda Tampoebolon, Pangestu Eko, Retno Iswarin Pujaningsih, and Widiyanto Widiyanto. "EVALUASI PEMBERIAN PAKAN DENGAN JUMLAH MULTINUTRIENT BLOCK YANG BERBEDA SEBAGAI SUPLEMEN TERHADAP PERFORMANS KAMBING KACANG." Jurnal Litbang Provinsi Jawa Tengah 17, no. 1 (September 13, 2019): 87–99. http://dx.doi.org/10.36762/litbangjateng.v17i1.770.

Testo completo
Abstract (sommario):
Giving multinutrient blocks as a feed supplement aims to catalyze more efficient use of poor quality animal feed. This study aimed to get good performance of Kacang goats through the providing of the right amount of multinutrient blocks (MNB). The experimental method used 12 male goats which were divided into 3 groups based on their body weight, K1 (18,75 ± 1,25 kg), K2 (16,20 ± 1,20 kg) and K3 (14,20 ± 1,20 kg). Corn forage and concentrate fed as basal feed with a composition of 20: 80. Concentrates were composed from rice bran, pollard, coffee peel and molasses. The multinutrient blocks mate
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46

Hangun-Balkir, Yelda. "Green Biodiesel Synthesis Using Waste Shells as Sustainable Catalysts withCamelina sativaOil." Journal of Chemistry 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/6715232.

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Abstract (sommario):
Waste utilization is an essential component of sustainable development and waste shells are rarely used to generate practical products and processes. Most waste shells are CaCO3rich, which are converted to CaO once calcined and can be employed as inexpensive and green catalysts for the synthesis of biodiesel. Herein, we utilized lobster and eggshells as green catalysts for the transesterification ofCamelina sativaoil as feedstock into biodiesel.Camelina sativaoil is an appealing crop option as feedstock for biodiesel production because it has high tolerance of cold weather, drought, and low-qu
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47

Govindaraju, Mugilan, Kathiresan V. Sathasivam, and Kasi Marimuthu. "Waste to Wealth: Value Recovery from Bakery Wastes." Sustainability 13, no. 5 (March 5, 2021): 2835. http://dx.doi.org/10.3390/su13052835.

Testo completo
Abstract (sommario):
Compost is considered a soil-amending product that can be used for soil improvement and to increase the productivity of organic vegetable crops. Composting can be an alternative solution for solid waste management. In this research, the efficacy of various bakery wastes and bulking agents, such as cow dung, to produce compost were studied. The bin composting method was applied in this research. Commercial effective microorganism was used to study its effectiveness in composting bakery waste compared to common ways of composting. Six compost trials were designed by using different ratios of fee
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48

MUSGROVE, MICHAEL T., DEANA R. JONES, JULIE K. NORTHCUTT, NELSON A. COX, and MARK A. HARRISON. "Identification of Enterobacteriaceae from Washed and Unwashed Commercial Shell Eggs." Journal of Food Protection 67, no. 11 (November 1, 2004): 2613–16. http://dx.doi.org/10.4315/0362-028x-67.11.2613.

Testo completo
Abstract (sommario):
To evaluate the effect of processing on the safety and quality of retail shell eggs, a storage study was conducted with unwashed and commercially washed eggs. This work demonstrated that commercial processing decreased microbial contamination of eggshells. To know which species persisted during storage on washed or unwashed eggs, Enterobacteriaceae isolates were selected and identified biochemically. For each of three replications, shell eggs were purchased from a commercial processing plant, transported back to the laboratory, and stored at 4°C. Once a week for 6 weeks, 12 eggs for each treat
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49

Subhan, Achmad, Dedy Setiawan, and Sitti Ahmiatri Saptari. "The 15th Internatonal Conference Quality in Resarch (Qir) 2017 Preparation and Ionic Conductivity of Li3.9Ca0.1Ti5O12 Using Waste Chicken Eggshells as ca Source for Anode Material of Lithium-Ion Batteries." IOP Conference Series: Materials Science and Engineering 316 (March 2018): 012048. http://dx.doi.org/10.1088/1757-899x/316/1/012048.

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50

Tůmová, E., M. Englmaierová, Z. Ledvinka, and V. Charvátová. "Interaction between housing system and genotype in relation to internal and external egg quality parameters." Czech Journal of Animal Science 56, No. 11 (November 22, 2011): 490–98. http://dx.doi.org/10.17221/3838-cjas.

Testo completo
Abstract (sommario):
The effect of three housing systems (conventional cages, enriched cages and litter) on egg quality parameters was evaluated in two experiments with four brown laying strains ISA Brown, Hisex Brown, Bovans Brown and Moravia BSL. During 40 weeks of lay the total number of 7200 eggs was produced and analysed for egg weight, egg component weight and eggshell quality indicators. In 60 eggs, pore density in the small-end, large-end and equatorial areas was determined. Significant interactions between genotype and housing were found out in egg weight (P ≤ 0.001), yolk and albumen weight (P &am
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