| Revue: | Anais da Academia Brasileira de Ciencias |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000436172 |
| ISSN: | 0001-3765 |
| Autores: | Cruz, Valdecy A.R1 Grupioni, Natalia V1 Mendonca, Gabriela G1 Venturini, Guilherme C2 Ledur, Monica C3 Peixoto, Jane O3 Munari, Danisio P1 |
| 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: | 2020 |
| 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 |
| Texte intégral: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
