Effect of mating type of animals on genomic prediction accuracy

انصاری موحد, سحر and قوی حسین زاده, نوید and شادپرور, عبدالاحد Effect of mating type of animals on genomic prediction accuracy. In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

The success of genomic selection is based on the estimation of marker effects with high accuracy for predicting breeding values of individuals using marker genotypes. After estimating genomic breeding values, these estimates are used for animals’ ranking and then selection of the best animals for mating. The aim of this research was to study effect of mating type of animals on genomic evaluation accuracy. In this research, a genome including one chromosome with length of 100 cM was simulated with 650 SNPs, which had uniform distribution over the chromosome, and with 50, 150 and 200 QTLs which randomly distributed throughout the chromosome and with different levels of heritability of 0.05, 0.3 and 0.6 to study the evaluation accuracy. In this study, two strategies of random and positive assortative matings were considered. The results of this study showed that positive assortative mating caused increase in the accuracy of genomic evaluation in validation population compared with random mating. In the heritability of 0.6 and with the number of 50 QTLs in the case of positive assortative mating, the mean of accuracy in validation population was 0.95 (±0.002), and with random mating in the same levels was 0.89 (±0.004).

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