Chicken embryo utilization of egg micronutrients Report as inadecuate




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Revista Brasileira de Ciência Avícola 2007, 9 1

Author: SL Vieira

Source: http://www.redalyc.org/


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Revista Brasileira de Ciência Avícola ISSN: 1516-635X revista@facta.org.br Fundação APINCO de Ciência e Tecnologia Avícolas Brasil Vieira, SL Chicken embryo utilization of egg micronutrients Revista Brasileira de Ciência Avícola, vol.
9, núm.
1, enero-marzo, 2007, pp.
1-8 Fundação APINCO de Ciência e Tecnologia Avícolas Campinas, SP, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=179713989001 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative Brazilian Journal of Poultry Science Revista Brasileira de Ciência Avícola ISSN 1516-635X Jan - Mar 2007 - v.9 - n.1 - 01 - 08 Chicken Embryo Micronutrients Utilization of Egg Author(s) Introduction Vieira SL Avian embryos develop and grow from energy and nutrients stored in the egg by the hen.
In this sense, breeder male contribution is not important.
Follicular deposition of nutrients occurs over a wide range of time, but becomes relevant during the week prior to ovulation.
Amounts, but also forms, of nutrients deposited in the egg determine success of embryo development and hatching of a healthy chick.
To support the embryo during incubation, oxygen is the only nutrient not derived from the egg; however, adequate oxygen concentrations in the surrounding air and its free passage through well-established shell membrane porosities are essential.
Developmental limitations and embryo mortality are aggravated when any inadequacy in these conditions prevail. Macroscopically, the fertile egg has three components: shell, yolk, and albumen.
Specific nutrients are mobilized by the embryo from each of these parts.
These typically have expected compositions, which are notably affected by the hen’s nutrition. After oviposition, the egg may be submitted to changes due ...





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