Table 6 Estimates of variance components and genetic parameters for weaning weight (the best model is shown in bold).

Model	\(\:{\sigma\:}_{a}^{2}\)	\(\:{\sigma\:}_{d}^{2}\)	\(\:{\sigma\:}_{c}^{2}\)	\(\:{\sigma\:}_{m}^{2}\)	\(\:{\sigma\:}_{a.m}\)	\(\:{\sigma\:}_{e}^{2}\)	\(\:{\sigma\:}_{p}^{2}\)	\(\:{h}_{a}^{2}\)	\(\:{h}_{d}^{2}\)	\(\:{h}_{c}^{2}\)	\(\:{h}_{m}^{2}\)	e²	r_{a, m}	AIC
1	4.551					16.750	21.302	0.21 ± 0.03				0.78 ± 0.02		14637.48
2	4.550	2.697				14.115	21.346	0.21 ± 0.02	0.13 ± 0.07			0.66 ± 0.07		14636.69
3	1.632		3.032			16.048	20.713	0.08 ± 0.03		0.15 ± 0.01		0.78 ± 0.02		14559.81
4	1.629	3.114	3.045			13.005	20.794	0.08 ± 0.02	0.15 ± 0.07	0.15 ± 0.01		0.62 ± 0.07		14558.33
5	1.252			3.277		16.847	21.377	0.06 ± 0.02			0.15 ± 0.02	0.79 ± 0.02		14585.06
6	1.249	3.054		3.296		13.860	21.640	0.06 ± 0.02	0.14 ± 0.06		0.15 ± 0.02	0.65 ± 0.07		14583.73
7	1.240			3.244	0.036	16.855	21.378	0.06 ± 0.02			0.15 ± 0.02	0.79 ± 0.02	0.02 ± 0.17	14586.06
8	1.235	3.055		3.253	0.047	13.870	21.641	0.06 ± 0.02	0.14 ± 0.06		0.15 ± 0.02	0.65 ± 0.07	0.02 ± 0.19	14584.73
9	1.431		2.666	0.478		16.153	20.729	0.07 ± 0.02		0.13 ± 0.01	0.02 ± 0.01	0.78 ± 0.02		14559.49
10	1.428	3.117	2.678	0.479		13.106	20.811	0.07 ± 0.02	0.15 ± 0.06	0.13 ± 0.01	0.02 ± 0.01	0.63 ± 0.07		14558.01
11	1.315		2.648	0.336	0.208	16.227	20.736	0.06 ± 0.02		0.13 ± 0.01	0.02 ± 0.01	0.78 ± 0.02	0.31 ± 0.27	14560.29
12	1.355	3.134	2.660	0.327	0.221	13.168	20.818	0.06 ± 0.02	0.15 ± 0.06	0.13 ± 0.01	0.02 ± 0.01	0.64 ± 0.07	0.34 ± 0.40	14558.79

\(\:{\sigma\:}_{a}^{2}\)= additive genetic variance;\(\:\:{\sigma\:}_{d}^{2}\)= dominance genetic variance;\(\:\:{\sigma\:}_{c}^{2}\)= maternal permanent environmental variance;\(\:\:{\sigma\:}_{m}^{2}\)= maternal genetic variance; \(\:{\sigma\:}_{a.m}\)= direct-maternal additive genetic covariance; \(\:{\sigma\:}_{e}^{2}\)= residual variance; \(\:{\sigma\:}_{p}^{2}\)= phenotypic variance;\(\:\:{h}_{a}^{2}\)= additive heritability; \(\:{h}_{d}^{2}\)= dominance heritability; \(\:\:{h}_{c}^{2}\)= maternal permanent environmental effect, \(\:{h}_{m}^{2}\)= maternal heritability; e²: ratio of residual variance to phenotypic variance; r_{a, m}= direct-maternal additive genetic correlation; AIC= Akaike’s information criterion.

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