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

Table 5 Mean estimated J factor regression coefficients of the 100 replicates, for body weight at 7 and 35 days (BW7 and BW35), with random genotyping

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	4.64			25.80
	EXP	− 121.30	4.57	4.57	− 1403.35	25.80	25.80
	OBS	− 121.24	7.46	0.90	− 1402.87	58.70	0.90
50%	ONE^b	4.22			27.29
	EXP	− 121.13	4.20	4.20	− 1403.16	27.16	27.16
	OBS	− 121.08	7.48	0.11	− 1402.68	62.24	− 16.18
25%	ONE^b	5.22			39.34
	EXP	− 121.33	5.22	5.22	− 1405.45	39.46	39.46
	OBS	− 121.30	8.38	1.43	− 1405.78	85.33	− 14.74

^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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