Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/41900
Title: Efeitos de ambiente e estimativas de parâmetros genéticos para características de carcaça em bovinos da raça Canchim criados em pastagem
Other Titles: Environmental effects and genetic parameters estimates for carcass traits in Canchim cattle raised on pastures
Keywords: Área de olho-de-lombo
Correlação genética
Espessura de gordura
Herdabilidade
Peso
Backfat thickness
Body weight
Genetic correlation
Heritability
Rib eye area
Issue Date: Jul-2010
Publisher: Sociedade Brasileira de Zootecnia (SBZ)
Citation: MEIRELLES, S. L. et al. Efeitos de ambiente e estimativas de parâmetros genéticos para características de carcaça em bovinos da raça Canchim criados em pastagem. Revista Brasileira de Zootecnia, Viçosa, MG, v. 39, n. 7, p. 1437-1442, jul. 2010. DOI: 10.1590/S1516-35982010000700006.
Abstract: The objective in this work was to study the effects of environmental factors on subcutaneous fat thickness (BFT), loin eye area (REA) and body weight (BW) measured at 19 months of age and to estimate genetic parametersfor these traits. It was used information obtained from 987 Canchim (5/8 Charolais + 3/8 Zebu) and MA genetic group (offspring of Charolais bulls and 1/2 Canchim + 1/2 Zebu cows) bulls and heifers, born in 2003, 2004, and 2005. Covariance components were estimate by restricted likelihood method using animal model with fixed effects (year of birth, genetic group, herd, and sex) and residual and direct additive genetic random effects. Means of loin eye area and weight were higher for males than for females. In the MA genetic group, the means, for all traits, were higher than in the Canchim group, and there were still the effects of herd and year of birth. The heritability estimates of REA (0.33 ± 0.09), BFT (0.24 ± 0.09) and BW (0.23 ± 0.09) were moderate, while genetic correlation estimate (0.21 ± 0.24) between BFT and REA was low, suggesting that traits are controlled by different sets of genes with additive action. Genetic correlations of BW with BFT (0.57 ± 0.23) and REA (0.62 ± 0.16) are moderate. It is possible to conclude that those traits can respond for selection and they indicate that selection for BW will increase also enhance BFT and REA and vice versa.
URI: http://repositorio.ufla.br/jspui/handle/1/41900
Appears in Collections:DZO - Artigos publicados em periódicos



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