Implementation of genomic selection in Canadian coloured dairy breeds

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Genomic selection involves the use of dense marker maps of the genome and the application of statistical models to simultaneously estimate the effects of small chromosome segments linked to the markers, The estimates can be used to evaluate the genetic merit of an animal through agenomic estimated breeding value. Genomic selection methods have been developed and implemented in Canada for Holstein cattle in a collaboration effort between Canadian and American researchers. The proposal is to extend the work carried out for Holsteins by developing and implementing genomic selection in coloured dairy breeds in Canada. The proposed study includes the development of aresource population of genotyped animals for estimating marker effects. the determination of the appropriate set of marker to be used for each breed and implementation of specific methods for each breed when needed. Validation studies will be carried out to assess the gains in