Table 2.

Variance components of the classical linear mean animal model and two double hierarchical generalized linear models DHGLM1 and DHGLM2 (untransformed data)

Sub-model	Variance component	Classical	DHGLM1	DHGLM2
Mean	Sire-dam	-	-	0.071 ± 0.010
	Genetic1	0.303 ± 0.041	0.099 ± 0.023	0.283 ± 0.039
	Common environment	0.013 ± 0.008	0.063 ± 0.010	0.016 ± 0.008
	Residual	0.521 ± 0.022	-	-
	Heritability	0.362 ± 0.043	-	-
Variance	Sire-dam	-	0.051 ± 0.008	0.043 ± 0.008
	Genetic1	-	0.204 ± 0.033	0.174 ± 0.031

¹Genetic variance is defined as 4*sire-dam variance.