Prediction of genetic merit for growth rate in pigs using animal models with indirect genetic effects and genomic information

Table 3 Estimates of variance components, heritability, and likelihood ratio statistics with associated p-values

\(\sigma _{{{\text{a}}_{\text{D}} }}^{2}\), direct genetic variance. \(\sigma _{{{\text{a}}_{\text{I}} }}^{2}\), indirect genetic variance. \(\rho_{{{\text{a}}_{{{\text{D}},{\text{I}}}} }}\), genetic correlation between direct- and indirect- genetic effects. \(\sigma_{\text{u}}^{2}\), sex-year-month variance. \(\sigma _{{{\text{l}}_{\text{D}} }}^{2}\), litter variance. \(\sigma_{{{\text{e}}_{\text{D}} }}^{2}\), residual variance. \(\sigma_{{1{\text{I}}}}^{2}\), indirect litter variance. \(\sigma _{{{\text{e}}_{\text{I}} }}^{2}\), indirect animal variance. \(\sigma_{p}^{2}\), total phenotypic variance. \(\sigma _{\text{TBV}}^{2}\), total heritable variance. \({\text{h}}^{2}\), direct heritability. \({\text{T}}^{2}\): total heritability. \(- 2LogL\), -2 times the log-likelihood. \(P\left( {\Delta LogL} \right)\), Chi square p-value (2 degrees of freedom) of log-likelihood ratio between INDIRECT and CLASSIC

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