Table 2.

Accuracy {expressed as correlations between true breeding values (TBV) and genomic estimated breeding values [GEBV; r(TBV, GEBV)]}, and slopes [b(TBV, GEBV)] of regression of TBV on GEBV for genomic prediction with 20 simulated QTL

	Ayrshire			Holstein
SNP panel	Single-task	Pooling	Multi-task	Single-task	Pooling	Multi-task
r(TBV, GEBV)
ρ = 0.2
800 k	0.71 ± 0.02	0.56 ± 0.04	0.75 ± 0.02	0.91 ± 0.01	0.90 ± 0.01	0.91 ± 0.01
400 k	0.64 ± 0.04	0.53 ± 0.04	0.73 ± 0.03	0.90 ± 0.01	0.86 ± 0.01	0.90 ± 0.01
200 k	0.60 ± 0.05	0.50 ± 0.04	0.68 ± 0.02	0.88 ± 0.01	0.84 ± 0.01	0.88 ± 0.01
100 k	0.57 ± 0.04	0.47 ± 0.04	0.63 ± 0.03	0.84 ± 0.01	0.81 ± 0.02	0.84 ± 0.01
ρ = 0.8
800 k	0.67 ± 0.05	0.76 ± 0.02	0.83 ± 0.01	0.92 ± 0.01	0.92 ± 0.01	0.93 ± 0.01
400 k	0.66 ± 0.05	0.72 ± 0.02	0.80 ± 0.01	0.90 ± 0.01	0.89 ± 0.01	0.90 ± 0.01
200 k	0.66 ± 0.04	0.68 ± 0.02	0.76 ± 0.01	0.86 ± 0.01	0.86 ± 0.01	0.86 ± 0.01
100 k	0.61 ± 0.04	0.63 ± 0.04	0.72 ± 0.02	0.83 ± 0.01	0.83 ± 0.01	0.84 ± 0.01
b(TBV, GEBV)
ρ = 0.2
800 k	1.06 ± 0.05	0.73 ± 0.05	1.04 ± 0.05	0.98 ± 0.02	1.01 ± 0.01	0.98 ± 0.01
400 k	1.06 ± 0.05	0.76 ± 0.06	1.06 ± 0.05	0.99 ± 0.02	1.00 ± 0.01	0.98 ± 0.01
200 k	1.02 ± 0.06	0.75 ± 0.05	1.03 ± 0.04	1.00 ± 0.01	0.99 ± 0.01	0.98 ± 0.01
100 k	1.00 ± 0.06	0.75 ± 0.05	1.03 ± 0.06	1.00 ± 0.01	1.00 ± 0.02	0.99 ± 0.01
ρ = 0.8
800 k	1.10 ± 0.06	0.90 ± 0.03	1.10 ± 0.04	0.99 ± 0.02	1.00 ± 0.02	0.99 ± 0.02
400 k	1.09 ± 0.06	0.89 ± 0.04	1.07 ± 0.04	0.99 ± 0.02	0.99 ± 0.01	0.99 ± 0.02
200 k	1.14 ± 0.06	0.89 ± 0.06	1.04 ± 0.05	0.98 ± 0.02	1.00 ± 0.02	0.98 ± 0.03
100 k	1.08 ± 0.08	0.85 ± 0.06	1.06 ± 0.05	0.98 ± 0.03	0.99 ± 0.03	0.98 ± 0.03