Table 3.

Estimates of variance components, direct $\left(h_d^2\pm SE\right)$, maternal $\left(h_m^2\pm SE\right)$, and total heritability $\left(h_t^2\right)$, and common litter effect $\left(C^2\pm SE\right)$ for individual weights of Yorkshire pigs (York) and Landrace pigs (Land) using bivariate analysis and model 4

Dataset1	Breed	Trait2	Variance component3				$h_d^2\pm SE$	$h_m^2\pm SE$	$h_t^2{}^{\text{4}}$	$C^2\pm SE$
			${\sigma }_d^2$	${\sigma }_m^2$	${\sigma }_c^2$	${\sigma }_e^2$
CORE	York	BW	0.017	0.022	0.019	0.059	0.15 $\pm$ 0.03	0.18 $\pm$ 0.02	0.17	0.17 $\pm$ 0.01
		WW	0.046	0.13	0.18	0.69	0.04 $\pm$ 0.01	0.13 $\pm$ 0.02	0.06	0.17 $\pm$ 0.01
		PW	30.76	4.90	7.23	51.73	0.33 $\pm$ 0.03	0.05 $\pm$ 0.01	0.25	0.08 $\pm$ 0.01
MERGED	York	BW	0.0094	0.033	0.019	0.047	0.10 $\pm$ 0.01	0.22 $\pm$ 0.01	0.15	0.20 $\pm$ 0.004
		WW	0.033	0.12	0.18	0.63	0.03 $\pm$ 0.01	0.13 $\pm$ 0.02	0.06	0.18 $\pm$ 0.01
		PW	36.58	5.70	12.98	56.84	0.34 $\pm$ 0.01	0.05 $\pm$ 0.004	0.31	0.12 $\pm$ 0.003
CORE	Land	BW	0.0044	0.024	0.015	0.046	0.05 $\pm$ 0.01	0.27 $\pm$ 0.02	0.13	0.17 $\pm$ 0.01
		WW	0.0046	0.098	0.15	0.54	0.01 $\pm$ 0.01	0.12 $\pm$ 0.01	0.02	0.19 $\pm$ 0.01
		PW	23.37	5.91	7.38	51.48	0.27 $\pm$ 0.03	0.07 $\pm$ 0.01	0.27	0.08 $\pm$ 0.01
MERGED	Land	BW	0.0064	0.027	0.020	0.043	0.07 $\pm$ 0.01	0.28 $\pm$ 0.01	0.11	0.21 $\pm$ 0.004
		WW	0.0071	0.099	0.16	0.53	0.01 $\pm$ 0.01	0.12 $\pm$ 0.01	0.02	0.20 $\pm$ 0.01
		PW	30.65	6.70	11.39	52.33	0.30 $\pm$ 0.01	0.07 $\pm$ 0.01	0.27	0.11 $\pm$ 0.003

¹CORE = all animals have BW, WW, and PW records; MERGED = combines the CORE dataset with animals that have BW and PW recorded, but not individual WW.

²BW= birth weight; WW= weaning weight; PW= probe weight.

^{3 ${\text{σ}}_d^2$}= direct additive genetic variance; ${\text{σ}}_m^2$= maternal genetic variance; ${\sigma }_c^2$= common litter variance; ${\text{σ}}_e^2$= residual variance.

⁴SE were not available.