Table 3.

Variance estimates and proportions of total phenotypic variance explained by relevant random effects ± SE from mixed-effects models

Trait	Additive genetic variance	Nest-of-origin variance	Nest-of-rearing variance	Experimental quartet variance	Residual variance
Body mass	0.28 ± 0.11 0.29 ± 0.11	<0.00001 <0.00001	0.38 ± 0.10 0.40 ± 0.07	<0.00001 <0.00001	0.29 ± 0.07 0.30 ± 0.08
Tarsus length	0.15 ± 0.04 0.37 ± 0.09	<0.00001 <0.00001	0.11 ± 0.03 0.27 ± 0.05	0 0	0.15 ± 0.02 0.36 ± 0.07
PHA response (young mother)	0.06 ± 0.01 0.68 ± 0.09	<0.00001 <0.00001	0.01 ± 0.004 0.10 ± 0.04	0.001 ± 0.003 <0.000001	0.02 ± 0.005 0.21 ± 0.07
PHA response (old mother)	0.01 ± 0.008 0.33 ± 0.18	<0.00001 <0.00001	0.01 ± 0.004 0.22 ± 0.08	0.001 ± 0.003 <0.000001	0.02 ± 0.005 0.45 ± 0.14

Variance components are provided as top values and respective proportions as bottom values. For components restricted by ASReml at the parameter space boundary (variances close to zero) we skip the standard error