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Poster De Conférence Année : 2014

Properties of mendelian residuals when regressing breeding values using a genomic covariance matrix

Résumé

Properties of Mendelian residuals when predicting breeding values(BV) with a positive definite genomic covariance matrixare presented. It is well known that in an infinitesimal model with an additive relationship matrix built from pedigree data, the variance of the Mendelian residuals (MR) from the regression of BV on those from the ancestors, explains half the additive variance without inbreeding (F), and a little less than that if F of the parents is not zero.We show that: 1) the residual variance of BVregression using a genomic covariance matrix is always less or equal, than Mendelian variance obtained from predictions calculated without using genomic information ; 2) MR are independent if BV of ancestors, parents and collateral related non-descendants animals (i.e. full and half- sibs, uncles, cousins) are included in the regression equation.
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Dates et versions

hal-02739254 , version 1 (02-06-2020)

Identifiants

  • HAL Id : hal-02739254 , version 1
  • PRODINRA : 331863

Citer

Rodolfo J.C. Cantet, Zulma Vitezica. Properties of mendelian residuals when regressing breeding values using a genomic covariance matrix. 10. World Congress of Genetics Applied to Livestock Production (WCGALP), Dec 2014, Vancouver, Canada. American Society of Animal Science, 2014, Proceedings 10th World Congress of Genetics Applied to Livestock Production (WCGALP). ⟨hal-02739254⟩
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