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LL Coutinho ; EAP de Figueiredo ; MC Ledur ; HJ Alves ;Revista Brasileira de Ciência Avícola 2003, 5 3

Autor: GS Schmidt

Fuente: http://www.redalyc.org/


Introducción



Revista Brasileira de Ciência Avícola ISSN: 1516-635X revista@facta.org.br Fundação APINCO de Ciência e Tecnologia Avícolas Brasil Schmidt, GS; Coutinho, LL; Figueiredo, EAP de; Ledur, MC; Alves, HJ Morphological Genetic Markers for Selection of Broiler Lines Revista Brasileira de Ciência Avícola, vol.
5, núm.
3, septiembre-diciembre, 2003, pp.
175-178 Fundação APINCO de Ciência e Tecnologia Avícolas Campinas, SP, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=179713981003 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 Sep - Dec 2003 - v.5 - n.3 - 175 - 178 Morphological Genetic Markers for Selection of Broiler Lines Author(s) ABSTRACT Schmidt GS1,3 Coutinho LL2,3 Figueiredo EAP de1,3 Ledur MC1 Alves HJ3 Two paternal broiler lines (LL and LLc, originated from the same stock in 1998) of Embrapa Suinos e Aves genetic program were used.
Line LL had been selected for eight generations for rapid growth while LLc had been mated randomly, without selection, as a control line.
In the last generation, 30 males and 240 females were used in hierarchical matings with pedigree control to determine sire effect.
The same number of birds were used, but matings were at random for LLc.
Eggs of both lines were incubated and embryos were collected in different development stages (40, 45, 50, 55 and 60 hours after setting) in order to determine somite number (NOS).
The number of evaluated embryos were 1,967 and 498 for LL and LLc, respectively.
This study aimed to determine the changes in somite formation during embryonic development that resulted from artificial selection for heavier body weight.
In the evaluated generation, t...





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