SciELO - Scientific Electronic Library Online

 
vol.42 issue8Genetic parameters for milk yield, lactation length and calving intervals of Murrah buffaloes from BrazilEffect of pectin extracted from citrus pulp on digesta characteristics and nutrient digestibility in broilers chickens author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista Brasileira de Zootecnia

On-line version ISSN 1806-9290

Abstract

MENEZES, Gilberto Romeiro de Oliveira et al. Estimation of genetic parameters for growth traits in Tabapuã cattle using a multi-trait model. R. Bras. Zootec. [online]. 2013, vol.42, n.8, pp.570-574. ISSN 1806-9290.  http://dx.doi.org/10.1590/S1516-35982013000800006.

To provide information that can contribute to the genetic evaluation and selection in Tabapuã cattle, genetic parameters were estimated for growth traits using a multi-trait animal model. (Co)variance components were estimated by a Bayesian approach using the Gibbs Sampler. Moderate and similar responses to selection are expected when selecting for weights at the four ages evaluated, since the direct heritability estimates were similar and of average magnitude (0.18 to 0.19). The direct and maternal additive genetic correlations between all pairs of weights were higher than 0.70, indicating a high degree of association between the four traits. This suggests that using any of them as selection criteria will result in correlated response in the others and that multi-trait analysis are recommended for the genetic evaluation of growth traits in beef cattle for exploiting this association.

Keywords : Bayesian; beef cattle; (co)variance components; genetic evaluation; selection.

        · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License