Impacts of both reference population size and inclusion of a residual polygenic effect on the accuracy of genomic prediction

Table 7 Pearson correlations of deregressed EBV with direct (DGV) or combined genomic value (GEBV) for the validation bulls using the EuroGenomics reference population

Trait	Correlation with DGV for scenarios with percent residual polygenic variance				Correlation with GEBV for scenarios with percent residual polygenic variance
	M^§	5%	10%	20%	M^§	5%	10%	20%
Milk yield	0.76	0.73	0.71	0.70	0.76	0.75	0.74	0.74
Somatic cell score	0.72	0.71	0.70	0.68	0.72	0.73	0.72	0.72
Stature	0.73	0.73	0.72	0.70	0.72	0.71	0.71	0.71
Udder depth	0.72	0.71	0.70	0.68	0.70	0.70	0.69	0.68
Body conditional score	0.62	0.62	0.62	0.61	0.61	0.58	0.58	0.58

^§M: the genomic model with the lowest residual polygenic variance assumes a residual polygenic heritability of 0.0001

ISSN: 1297-9686