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Estimation of variance components, genetic parameters and genetic trends for litter size of swines R. Bras. Zootec.
Barbosa,Leandro; Lopes,Paulo Sávio; Regazzi,Adair José; Torres,Robledo de Almeida; Santana Júnior,Mário Luiz; Veroneze,Renata.
Records of Large White breed animals were used to estimate variance components, genetic parameters and trends for the character total number of born piglets (TNBP) as measure of litter size. For obtaining variance components and genetic parameters, it was used the Restricted Maximum Likelihood Method using MTDFREML software. Two mixed models (additive and repeatability) were evaluated. The additive model contained fixed effect of the contemporary group and the following random effects: direct additive genetic and residual effect for the first parturition. Repeatability model had the same effects of the additive model plus parturition order fixed effect and non-correlated animal permanent environment random effect for the second, third and forth...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic trend; Heritability; Number of piglets; REML; Repeatability model; Reproductive traits.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001000008
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