083
Effect of Cow Reference Group on Validation Accuracy of Genomic Evaluation
Effect of Cow Reference Group on Validation Accuracy of Genomic Evaluation
Friday, August 22, 2014: 10:45 AM
Bayshore Grand Ballroom B-C (The Westin Bayshore)
Abstract Text: We studied the effect of including genotyped cows in the reference population of the Nordic Red Dairy Cattle on the validation accuracy of genomic breeding values. Deregressed individual cow EBVs (DRP) were used in single-step genomic evaluations. The accuracy of evaluations was calculated after including 0 or 3,111 or 5,593 genotyped cows in the reference population. All evaluations used 4,188 genotyped bulls in the reference. The gain in accuracy was as less than expected, varying from 0.8% to 2.6%-units for the production traits. Still, genotyping cows and subsequent inclusion in the reference population is advantageous and should be increased.
Keywords:
Genomic selection
GEBV
single-step GBLUP
