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Table 5 Genetic and permanent environmental variance components for ADG (g/d) obtained by the repeated measures model

From: Harnessing longitudinal information to identify genetic variation in tolerance of pigs to Porcine Reproductive and Respiratory Syndrome virus infection

 

Null repeated measure model

Level-only repeated measure model

Level-slope repeated measure model

Genetic

 Level

 

2.16 (0.91)

2.89 (1.16)

 Covariance

  

0.103 (0.054)

 Slope

  

0.012 (0.003)

PEV

 Level

2.01 (0.34)

2.01 (0.34)

2.89 (1.16)

 Covariance

0.03 (0.01)

0.03 (0.01)

0.103 (0.005)

 Slope

0.002 (0.001)

0.003 (0.001)

0.01 (0.003)

Other

 Pen

0.62 (0.20)

0.66 (0.20)

0.66 (0.20)

 Litter

1.21 (0.29)

0.70 (0.26)

0.70 (0.27)

 Residual

10.51 (0.39)

10.49 (0.39)

10.15 (0.38)

 Log Likelihood

4846.7

4855.49

4884.44

  1. Estimates include ADG and VL measures for all three defined stages of infection (early, mid and late), together with the Log-Likelihood value associated with the different models. Variance components estimated from random regression models: null model, containing no genetic effect; level-only model, containing only the overall sire effect on growth under infection; and level-slope model, containing sire effects on level and slope, respectively. All other fixed effects/covariates and random effects were identical between models. Variance component estimates for the other random effects (e.g. pen, litter, common environmental, residuals) were identical between the models and not shown. Standard errors are in brackets