Genetic parameters for performance and carcass traits in a paternal 1 lineage of broiler



Título del documento: Genetic parameters for performance and carcass traits in a paternal 1 lineage of broiler
Revista: Anais da Academia Brasileira de Ciencias
Base de datos: PERIÓDICA
Número de sistema: 000436172
ISSN: 0001-3765
Autores: 1
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Instituciones: 1Universidade Estadual Paulista "Julio de Mesquita Filho", Faculdade de Ciencias Agrarias e Veterinarias, Jaboticabal, Sao Paulo. Brasil
2Universidade de Uberaba, Faculdade de Medicina Veterinaria, Uberaba, Minas Gerais. Brasil
3Empresa Brasileira de Pesquisa Agropecuaria, Suínos e Aves, Concordia, Santa Catarina. Brasil
Año:
Volumen: 92
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Aplicado, descriptivo
Resumen en inglés 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
Disciplinas: Medicina veterinaria y zootecnia
Palabras clave: Aves de corral,
Zootecnia,
Pollos de engorda,
Conversión de alimento,
Correlación genética,
Heredabilidad,
Ganancia de peso,
Rendimiento de canal
Keyword: Poultry,
Animal husbandry,
Feed conversion,
Genetic correlation,
Carcass yield,
Heritability,
Weight gain
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