Table 1.

Accuracies of genomic prediction for the validation cows

Trait	GBLUP		Original one-step		Adjusted one-step
	r v *	Theoretical accuracy	r v *	Theoretical accuracy	r v *	Theoretical accuracy
	All validation cows
Milk yield	0.36	0.73	0.46	0.75	0.46	0.75
Fat yield	0.44	0.73	0.60	0.75	0.60	0.75
Fat %	0.52	0.67	0.60	0.69	0.60	0.69
Protein yield	0.37	0.72	0.51	0.74	0.51	0.75
Protein %	0.51	0.67	0.62	0.69	0.62	0.69
Average	0.44	0.70	0.56	0.72	0.56	0.73
	386 validation cows with genotyped dams
Milk yield	0.34	0.73	0.36	0.73	0.37	0.74
Fat yield	0.42	0.73	0.44	0.74	0.44	0.74
Fat %	0.50	0.66	0.52	0.67	0.52	0.67
Protein yield	0.36	0.72	0.37	0.73	0.37	0.73
Protein %	0.48	0.67	0.50	0.67	0.50	0.67
Average	0.42	0.70	0.44	0.71	0.44	0.71
	425 validation cows with both non-genotyped dams and half-sisters
Milk yield	0.36	0.73	0.55	0.76	0.55	0.76
Fat yield	0.46	0.73	0.73	0.76	0.72	0.76
Fat %	0.54	0.67	0.69	0.70	0.69	0.70
Protein yield	0.39	0.75	0.62	0.76	0.62	0.76
Protein %	0.54	0.67	0.73	0.70	0.73	0.70
Average	0.46	0.71	0.66	0.74	0.66	0.74

*r _v is equal to the correlation between the estimated breeding and the DRP divided by the average of the square root of the reliability of the DRP in the validation cows.