Author(s):
Cruz, Valdecy Aparecida Rocha [UNESP] ; Grupioni, Natalia V. [UNESP] ; Mendonça, Gabriela G. [UNESP] ; Venturini, Guilherme C. ; Ledur, Monica C. ; Peixoto, Jane O. ; Munari, Danisio P. [UNESP]
Date: 2020
Persistent ID: http://hdl.handle.net/11449/200430
Origin: Oasisbr
Subject(s): Carcass; Feed conversion; Genetic correlation; Heritability; Weight gain; Carcass; Carcass; Feed conversion; Feed conversion; Genetic correlation; Genetic correlation; Heritability; Heritability; Weight gain; Weight gain
Description
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Empresa Brasileira de Pesquisa Agropecuária
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Universidade Estadual Paulista
The objective of this study was to estimate variance components for performance and carcass traits in a paternal broiler line. The (co)variance components were estimated by the restricted maximum likelihood method applied to the animal model, including the fixed effect of group (sex and hatch) and additive genetic and residual as random effects. Estimated heritability for performance traits ranged from 0.09 to 0.42. The genetic correlations between traits ranged from-0.50 to 0.97. The heritability estimates of feed intake, weight gain, and feed conversion from 35 to 41 days of age were of low magnitude. The genetic correlations among them were favorable to genetic selection. These results suggest that moderate genetic gain can be obtained to the feed intake and weight gain when the selection criterion is the body weight and prime cuts traits. The feed conversion that had low heritability estimation and low genetic correlation with the body weight and prime cut traits needs to pay greater attention due to the economic importance in the high-meat production lineage breeding programs.
Faculdade de Ciências Agrárias e Veterinárias/ FCAV Universidade Estadual Paulista/ UNESP Departamento de Ciências Exatas, Via de Acesso Professor Paulo Donato Castelane Castellan, s/n, Vila Industrial
Faculdade de Medicina Veterinária Universidade de Uberaba/UNIUBE, Avenida Nenê Sabino, 1801
Embrapa Suínos e Aves, BR153, Km 110, Distrito de Tamanduá
Faculdade de Ciências Agrárias e Veterinárias/ FCAV Universidade Estadual Paulista/ UNESP Departamento de Ciências Exatas, Via de Acesso Professor Paulo Donato Castelane Castellan, s/n, Vila Industrial
