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Table 4 Variance components for ADG (kg/d) from 0 to 21 dpi and 0 to 42 dpi

From: Use of multi-trait and random regression models to identify genetic variation in tolerance to porcine reproductive and respiratory syndrome virus

ADG period (dpi)

Null model

Level-only model

Slope-only model

Level-slope model

Estimate (SE)

Estimate (SE)

Estimate (SE)

Estimate (SE)

0 to 21

    

 Level

 

2.01E−03 (7.68E−04)

 

2.01E−03 (7.68E−04)

 Covariance

   

2.21E−13 (1.04E−14)

 Slope

  

4.37E−06 (2.06E−07)

1.00E−10 (4.71E−12)

 Pen (trial)

4.12E−04 (1.45E−04)

3.97E−04 (1.42E−04)

4.12E−04 (1.45E−04)

3.97E−04 (1.42E−04)

 Litter

9.25E−04 (2.26E−04)

4.72E−04 (2.04E−04)

9.25E−04 (2.26E−04)

4.72E−04 (2.04E−04)

 Residual

6.18E−03 (2.91E−04)

6.18E−03 (2.91E−04)

6.18E−03 (2.91E−04)

6.18E−03 (2.91E−04)

 LogLikelihood

2482.98

2495.03

2482.98

2495.2

0 to 42

    

 Level

 

2.32E−03 (1.02E−03)

 

2.33E−03 (1.03E−03)

 Covariance

   

−3.95E−15 (2.04E−16)

 Slope

  

8.60E−08 (1.47E−07)

3.41E−07 (5.94E−07)

 Pen (trial)

2.43E−04 (1.30E−04)

2.82E−04 (1.36E−04)

2.39E−04 (1.29E−04)

2.78E−04 (1.35E−04)

 Litter

1.76E−03 (3.27E−04)

1.23E−03 (2.98E−04)

1.75E−03 (3.27E−04)

1.22E−03 (2.98E−04)

 Residual

5.39E−03 (3.03E−04)

5.33E−03 (2.99E−04)

5.36E−03 (3.05E−04)

5.30E−03 (3.02E−04)

 LogLikelihood

1889.55

1911.18

1899.72

1911.35

  1. 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; slope-only model, containing only sire effect on the slope of the regression line of growth over VL; and level-slope model, containing sire effects on level and slope, respectively
  2. All other fixed effects/covariates and random effects were identical between models
  3. Results for ADG42 on VL21 were similar to those for ADG42 on VL42 and are therefore not shown
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Genetics Selection Evolution

ISSN: 1297-9686