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Partition of the genetic trend to validate multiple selection decisions

Published online by Cambridge University Press:  13 May 2008

L. A. García-Cortés ,
J. C. Martínez-Ávila  and
M. A. Toro
L. A. García-Cortés*
Affiliation:
Departamento de Mejora Genética, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Ctra de La Coruña Km 7.5, 28040, Madrid, Spain
J. C. Martínez-Ávila
Affiliation:
Departamento de Mejora Genética, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Ctra de La Coruña Km 7.5, 28040, Madrid, Spain
M. A. Toro
Affiliation:
Departamento de Mejora Genética, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Ctra de La Coruña Km 7.5, 28040, Madrid, Spain
*
E-mail: garcia@inia.es
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Abstract

In this note, a procedure to partition the genetic trend of a selected population is presented. Each part of the genetic gain accounts for the Mendelian sampling terms of different groups of animals, which can be sometimes assigned to different selection policies. The method is based on a simple transformation of the predicted breeding values. The procedure was illustrated with two simulated examples. In the first example, the genetic trend is partitioned into two pieces, one coming from the selection on sires and the other coming from the selection on dams. The second example shows how the impact of an artificial insemination center in the genetic gain of the whole population can be evaluated.

Keywords

selection responsegenetic trendbest linear unbiased predictionnumerator relationship matrix
Type
Full Paper
Information
animal , Volume 2 , Issue 6 , June 2008 , pp. 821 - 824
Copyright
Copyright © The Animal Consortium 2008

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