Validation with single-step SNPBLUP shows that evaluations can continue using a single mean of genotyped individuals, even with multiple breeds

Table 6 Mean estimated J factor regression coefficients of the 100 replicates, for body weight at 7 and 35 days (BW7 and BW35), with selective genotyping based on phenotypic performance

Genotyping rate	J-factor method^a	BW7			BW35
Genotyping rate	J-factor method^a	Sire	Dam B	Dam C	Sire	Dam B	Dam C
75%	ONE^b	− 194.37			− 1999.56
	EXP	− 57.72	− 194.33	− 194.33	− 753.68	− 1999.07	− 1999.07
	OBS	− 57.67	− 191.97	− 197.38	− 753.23	− 1965.18	− 2040.79
50%	ONE^b	− 137.75			− 1330.02
	EXP	− 78.47	− 137.79	− 137.79	− 991.49	− 1330.17	− 1330.17
	OBS	− 78.45	− 136.32	− 139.57	− 991.03	− 1284.36	− 1385.35
25%	ONE^b	− 89.32			− 785.36
	EXP	− 95.54	− 89.27	− 89.27	− 1178.14	− 785.43	− 785.43
	OBS	− 95.50	− 88.11	− 90.84	− 1178.49	− 729.79	− 850.37

^aJ-factor methods used include: one for all breeds (ONE), three J-factors calculated using for each breed the expected (EXP), or observed (OBS) breed contribution calculated using BOA from previous analysis [13]
^bThe estimate for ONE is for a single estimate for the full population and not the sire breed

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