Chicken Eggs
Mostrando 1-12 de 161 artigos, teses e dissertações.
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1. Morphological Investigations of the Effect of Thermal Manipulation During Embryogenesis on Body Performance and Structure of Pectoral and Thigh Muscle of Ross Broiler Chicken
ABSTRACT The aim of this study was to determine the optimum timing of thermal manipulation during early, mid, late and long lasting embryogenesis that may result in improvement of body performance and myofiber development (fiber diameter and thickness of perimysium) of pectoral and thigh muscles by a comparative morphometrical investigation on post-hatch day
Braz. J. Poult. Sci.. Publicado em: 20/12/2019
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2. Generation of Yellow Fever virus vaccine in skeletal muscle cells of chicken embryos
BACKGROUND The Yellow Fever (YF) vaccine is produced by the inoculation of embryonated chicken eggs with YF17DD virus on the ninth day of development. Full embryos are collected on the twelfth day of development for vaccine formulation. Skeletal muscle tissue is the main site where biosynthesis of viral particles occurs. OBJECTIVES This study aimed to an
Mem. Inst. Oswaldo Cruz. Publicado em: 09/12/2019
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3. Productive Performance, Egg Characteristics and Hatching Traits of Three Chicken Genotypes under Free-Range, Semi-Intensive, and Intensive Housing Systems
ABSTRACT The present study aimed at evaluating the effect of housing system on the live performance, egg quality, and hatching traits of three dual-purpose chicken genotypes. In total, 180 birds, comprising 48 pullets and 12 cockerels from each of three genotypes, were evaluated during the production phase (27-46 weeks). For this, 144 pullets and 36 cockerel
Braz. J. Poult. Sci.. Publicado em: 14/11/2019
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4. Evaluation of the Relationship Between the Breeder’s Age, Breed and the Incubator Types on Quality and Animal Welfare in the Hatchery
ABSTRACT About 33.3% of chicken life is conditioned by the result of embryonic development. Therefore, understanding and improving the early phase of the broiler’s life is critical to guarantee their well-being. Thus, the objective of this research was to evaluate the relationship between the breeder’s age, breed and the incubator types on quality and an
Braz. J. Poult. Sci.. Publicado em: 11/11/2019
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5. Pellet Method of Semen Cryopreservation: Effect of Cryoprotectants, Semen Diluents and Chicken Lines
Abstract The present study evaluated the effect of cryoprotectants, semen diluents and chicken lines during pellet method of semen cryopreservation. Three different experiments were conducted; Experiment 1 - semen was cryopreserved using dimethylformamide (DMF) at 6% and 9% concentrations in two semen diluents (Lake and Ravie diluent and TES/NaCl diluent), E
Braz. arch. biol. technol.. Publicado em: 01/08/2019
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6. Chicken eggs as a surveillance tool for malaria and leishmaniasis vector presence
Abstract INTRODUCTION: Malaria and leishmaniases are transmitted by vectors during blood-feeding. Vector-infected animals develop antibodies against the vector’s saliva. This study evaluated IgY antibody detection in the chicken eggs exposed to bites from Migonemyia migonei, Lutzomyia longipalpis and Anopheles aquasalis. METHODS: We used ELISA to quant
Rev. Soc. Bras. Med. Trop.. Publicado em: 16/05/2019
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7. Oxidative Stress of in-Ovo Ochratoxin A Administered during Chick Embryonic Development
ABSTRACT The present work was carried out to study the effect of in-ovo injection of ochratoxin A (OTA) as an oxidative stress and its consequences on hepatic and kidney functions, thyroid activity, and histological examination of brain and liver in chicken embryos and subsequently in the hatching chicks. On the 10th day of incubation, one hundred and sixty-
Braz. J. Poult. Sci.. Publicado em: 09/05/2019
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8. Standardization of A Sample-Processing Methodology for Stable Isotope Studies in Poultry
ABSTRACT The objective of this study was to determine if lipid extraction processes alter the isotopic value of δ13C and δ15N of tissues (pectoral muscle, thigh and liver) and eggs and if the use of anticoagulants interferes with blood and plasma δ13C and δ15N isotopic values. Samples were acquired from the same flock of birds. The 32 egg samples were ra
Braz. J. Poult. Sci.. Publicado em: 18/04/2019
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9. Performance and welfare of different genetic groups of laying hen
ABSTRACT. The objective was to evaluate the performance, egg quality, thermoregulation, body morphology and behavior of different categories of laying poultry. Two treatments with two genetic groups were used, 50 birds of the Hisex Brown strain and 50 birds of the Black Avifran chicken breed with 55 weeks, distributed in a completely randomized design with 1
Acta Sci., Anim. Sci.. Publicado em: 25/02/2019
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10. Influence of dietary fat sources and conjugated fatty acid on egg quality, yolk cholesterol, and yolk fatty acid composition of laying hens
ABSTRACT This study was conducted to investigate the effects of dietary fats (tallow [TO] or linseed oil [LO]) or conjugated linoleic acid (CLA), singly or in combination, on laying performance, yolk lipids, and fatty acid composition of egg yolks. Three hundred 50-week-old laying hens were given one of five diets containing 2% TO; 1% TO + 1% CLA (TO/CLA); 2
R. Bras. Zootec.. Publicado em: 16/07/2018
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11. Welfare-friendly Products: availability, labeling and opinion of retailers in Curitiba, Southern Brazil,
Abstract: The market for welfare-friendly products (WFP) is increasing worldwide; however, there is a lack of information on this topic in Brazil. We investigated availability, product information and opinion of retailers about WFP in Curitiba, Southern Brazil. We visited 36 strategically located retailers, conducting product evaluation and interviews with m
Rev. Econ. Sociol. Rural. Publicado em: 2018-03
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12. Toxic Elements and Microbiological Content of Food: Evidence from a Case Study in a Brazilian City Heavily Contaminated by Lead and Cadmium
Food security has become a major concern of the world population and this is even more prominence in polluted areas. This study aimed to evaluate microbiological and toxic elements content of local food itens from Santo Amaro, Bahia. The determination of lead, cadmium, Escherichia coli (E. coli) and total coliform were carried out in coriander, cassava, okra
J. Braz. Chem. Soc.. Publicado em: 2017-07