Multibreed analysis by splitting the breeding values

Genetics Selection Evolution

Miguel Ángel Toro²  Luis Alberto García-Cortés¹ 

[1] Departamento de Producción Animal, ETSI Agrónomos, Universidad Politécnica de Madrid, Spain;Departamento de Mejora Genética Animal, SGIT-INIA, Carretera de la Coruña, Km. 7, 28040-Madrid, Spain

关键词: Gibbs sampler;    mixed model equations;    genetic evaluation;    multibreed population;    segregation variance;   

Others  :  1094067
DOI  :  10.1186/1297-9686-38-6-601

 received in 2005-08-05, accepted in 2006-06-27,  发布年份 2006

【 摘 要 】

An equivalent model for multibreed variance covariance estimation is presented. It considers the additive case including or not the segregation variances. The model is based on splitting the additive genetic values in several independent parts depending on their genetic origin. For each part, it expresses the covariance between relatives as a partial numerator relationship matrix times the corresponding variance component. Estimation of fixed effects, random effects or variance components provided by the model are as simple as any model including several random factors. We present a small example describing the mixed model equations for genetic evaluations and two simulated examples to illustrate the Bayesian variance component estimation.

【 授权许可】

   
2006 INRA, EDP Sciences