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Reliability of Genomic Selection of Reproduction Traits in Finnish Yorkshire Pig Breed
Genomic selection is effective for traits that can be measured only from one sex. These traits include sow reproduction traits in pigs. The aim of this study was to estimate reliability of genomic selection in the Finnish Yorkshire population. The data included 723 genotyped AI-boars. Phenotypic data was divided into two sets: records before 2005 and records up to 2012. Boars having daughter records before 2005 were treated as reference animals and boars having daughters between 2005-2012 were treated as validation animals. Direct genomic values (DGV) were estimated using SNP-BLUP. The Interbull validation method was applied to calculate the validation reliability. The reliability varied from 0.32 to 0.58. It was the highest for pig mortality in later parities and the lowest for the total number of piglets born in the first parity. Corresponding validation accuracy of the parent average was 0.20.
Keywords:
pig
reproduction traits
reliability
genomic selection
