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Estimation of variance components due to competition effects for selected lines of swine



Estimation of variance components due to competition effects for selected lines of swine



Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006: 17-03



Components of variance for average daily gain (ADG, g) for models including genetic competition effects were estimated for selected lines of swine with MTDFREML (11 235 pigs). With full model, estimates were 3636, 13, 18, 1746 and 6863 for direct ( sigma d2), direct competition ( sigma dc), competition ( sigma c2), pen ( sigma pg2) and residual ( sigma e2) (co)variance components, respectively with competition genetic variance statistically significantly different from zero.

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