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

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

  Classic Indirect
\(\sigma_{{a_{D} }}^{2}\) 3339 (± 450) 3349 (± 451)
\(\sigma_{{a_{I} }}^{2}\)   34.4 (± 16.3)
\(\rho_{{a_{D,I} }}\)   0.06 (± 0.18)
\(\sigma_{u}^{2}\) 951 (± 319) 908 (± 306)
\(\sigma_{{l_{D} }}^{2}\) 636 (± 131) 633 (± 131)
\(\sigma_{{e_{D} }}^{2}\) 10,971 (± 289) 10,989 (± 295)
\(\sigma_{{l_{I} }}^{2}\) 37.7 (± 11.1) 19.1 (± 12.2)
\(\sigma_{{e_{I} }}^{2}\) 112.9 (± 18.1) 97.4 (± 21.8)
\(\sigma_{p}^{2}\) 17,188 (± 420) 17,597 (± 495)
\(\sigma _{TBV}^{2}\)   6201 (± 1694)
\(h^{2}\) 0.19 (± 0.02) 0.19 (± 0.02)
\(T^{2}\)   0.35(± 0.09)
\(- 2LogL\) 119,074.46 119,067.12
\(P\left( {\Delta LogL} \right)\)   0.025
  1. \(\sigma _{{{\text{a}}_{\text{D}} }}^{2}\), 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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