Use of multi-trait and random regression models to identify genetic variation in tolerance to porcine reproductive and respiratory syndrome virus

Table 5 Effect of the genetic correlation (r_g) between simulated ADG in the absence of infection and observed ADG under infection on evidence for genetic variance in tolerance

ADG period (dpi)	r_g	ΔLogLikelihood	p value	Proportion with significant genetic variance for tolerance (p < 0.05)
0 to 21	0.05	10.96 (4.19)	0.000	1.00
	0.30	6.18 (3.39)	0.005	0.98
	0.60	2.32 (1.49)	0.041	0.76
	0.90	1.00 (2.12)	0.067	0.55
0 to 42	0.05	8.67 (4.40)	0.003	0.99
	0.30	4.34 (3.16)	0.023	0.87
	0.60	1.31 (1.56)	0.107	0.41
	0.90	−0.80 (2.43)	0.187	0.06

Effect of the genetic correlation (r_g) of simulated ADG ⁰₂₁ with ADG₂₁ and ADG ⁰₄₂ with ADG₄₂ on the average change in log-likelihood of the intercept-slope model over the intercept-only model (∆LogLikelihood), the average p-value of log likelihood improvement, provided by a log-likelihood ratio test, and the proportion of the 10,000 replicates with significant genetic variance in tolerance (i.e. p value of LRT was <0.05)
SD over 10,000 replicates are shown in brackets

ISSN: 1297-9686