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Estimation of Variance Component on Swine Economic Traits using Multivariate Maternal Animal Model  

Park, Jong-Won (Div. of Appl. Life Sci., Gyeongsang National Univ.,(Insti. of Agric. and Life Sci.))
Kim, Byeong-Woo (Div. of Appl. Life Sci., Gyeongsang National Univ.,(Insti. of Agric. and Life Sci.))
Kim, Si-Dong (National Institute of Animal Science)
Jang, Hyeon-Ki (Korea Animal Improvement Association)
Jeon, Jin-Tae (Div. of Appl. Life Sci., Gyeongsang National Univ.,(Insti. of Agric. and Life Sci.))
Kong, Il-Keun (Div. of Appl. Life Sci., Gyeongsang National Univ.,(Insti. of Agric. and Life Sci.))
Lee, Jung-Gyu (Div. of Appl. Life Sci., Gyeongsang National Univ.,(Insti. of Agric. and Life Sci.))
Publication Information
Journal of agriculture & life science / v.44, no.2, 2010 , pp. 29-38 More about this Journal
Abstract
This study looked into estimation of variance component over swine's economic traits by multiple animal model and maternal effect model using on-farm test data of total 31,455 swine of Duroc, Landrace and Yorkshire species that were born between 2000 and 2008. Heritability by estimated additive genetic effect showed higher than one by maternal genetic effect using multivariate maternal animal model in each trait examined by each breed and most heritability when considering only additive genetic effect in multiple traits animal model was estimated to be higher than one by estimated additive genetic effect in multivariate maternal animal model. In correlation between breeding value by estimated maternal genetic effect and phenotypic value using multivariate maternal animal model, rank correlation and simple correlation of breeding value and phenotypic value by maternal genetic effect also showed low positive correlation or strong negative correlation, which can be considered that if correlation with phenotype were increased properly considering maternal genetic effect in each trait by each breed, even better improvement could be promoted.
Keywords
Swine; Breeding value; Maternal Effect; Additive Effect; Correlation;
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