Artículos de revistas
Genetic correlations between body weight, scrotal circumference and visual evaluation scores in Bos indicus cattle
Fecha
2018-09-01Registro en:
Animal Science Journal. Hoboken: Wiley, v. 89, n. 9, p. 1223-1229, 2018.
1344-3941
10.1111/asj.12972
WOS:000443379400001
Autor
Universidade Federal de Minas Gerais (UFMG)
Fed Inst Northern Minas Gerais
Universidade Federal de Viçosa (UFV)
Brazilian Assoc Zebu Breeders
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The objective was to estimate genetic correlations between body weight (BW), scrotal circumference and visual evaluation scores of body conformation measured at standard ages in Guzerat cattle. All measurements were performed at 205 (weaning age), 365, 450 and 550days of age; for BW, two additional measurements (at birth and 120days of age) were realized. The data utilized in this study were retrieved from a database of the Brazilian Association of Zebu Breeders that contained information of registered Guzerat animals born between 1970 and 2013. Genetic parameters were estimated in bi-trait analyses by using Bayesian inference. Genetic correlations between BW at 205 and 450days of age with other traits were high and positive, whereas the correlations between visual evaluation scores with other traits were moderate. Based on correlations herein obtained, we conclude that selection based on BW results in increased visual scores and scrotal circumference, leading to improvements in productive performance and animals with best body conformation.