# Table 2 Estimates (standard errors) of variance components and genetic parameters for weight and weight uniformity in different environments (nucleus, $$N$$, and commercial, $$C$$) obtained from multivariate and univariate DHGLM models

Multivariate Univariate
$$N$$ $$C$$ $$N$$ $$C$$
Weight
$$\sigma_{{u_{m} }}^{2}$$ 4.45 (0.33) 1.60 (0.12) 4.42 (0.33) 1.60 (0.12)
$$\sigma_{u}^{2}$$ 8.90 3.20 8.85 3.19
$$\sigma_{e}^{2}$$ 19.06 6.64 18.98 6.60
$$\sigma_{P}^{2}$$ 23.51 8.23 23.40 8.19
$$h^{2}$$ 0.38 0.39 0.38 0.39
Weight uniformity
$$\sigma_{{u_{m}^{*} }}^{2}$$ 0.06 (0.01) 0.06 (0.01) 0.06 (0.01) 0.06 (0.01)
$$h_{v}^{2}$$ 0.02 0.02 0.02 0.02
$$GCV_{e}$$ 0.25 (0.01) 0.24 (0.01) 0.25 (0.01) 0.23 (0.02)
1. DHGLM: double hierarchical generalized linear model. $$\sigma_{{u_{m} }}^{2} , \sigma_{{u_{m}^{*} }}^{2}$$: additive variances of the mother plus father for body weight and its uniformity, respectively; $$\sigma_{u}^{2}$$: additive variance for body weight defined as 2*$$\sigma_{{u_{m} }}^{2}$$; $$\sigma_{e}^{2}$$: residual variance; $$\sigma_{P}^{2} :$$ phenotypic variance; $$h^{2}$$, $$h_{v}^{2}$$: heritabilities of weight and its uniformity, respectively; $$GCV_{e}$$: genetic coefficient of residual variation for weight uniformity