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Table 6 Variance components of intercept, slope and covariances from random regression models

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)

rg

Intercept-only model

Intercept–slope model

Intercept

Intercept

Covariance

Slope

0 to 21

0.05

7.65E−04 (2.24E−04)

9.93E−04 (2.98E−04)

−7.57E−06 (3.97E−06)

2.24E−07 (5.80E−08)

0.3

9.20E−04 (2.53E−04)

9.95E−04 (2.99E−04)

−3.03E−06 (3.27E−06)

1.44E−07 (5.09E−08)

0.6

1.13E−03 (2.71E−04)

1.03E−03 (2.84E−04)

1.54E−06 (2.13E−06)

5.54E−08 (3.24E−08)

0.9

1.34E−03 (2.31E−04)

1.19E−03 (1.95E−04)

3.35E−06 (1.06E−06)

1.25E−08 (6.33E−09)

0 to 42

0.05

9.20E−04 (2.83E−04)

1.10E−03 (3.47E−04)

−5.80E−06 (3.59E−06)

1.18E−07 (3.87E−08)

0.3

1.09E−03 (3.05E−04)

1.12E−03 (3.47E−04)

−1.90E−06 (2.85E−06)

6.85E−08 (3.23E−08)

0.6

1.28E−03 (3.15E−04)

1.14E−03 (3.19E−04)

−5.57E−07 (1.75E−06)

2.37E−08 (1.65E−08)

0.9

1.47E−03 (2.57E−04)

1.21E−03 (4.10E−04)

1.95E−06 (1.21E−06)

1.09E−08 (7.13E−09)

  1. Variance components estimated from random regression models based on simulated ADG 021 and measured ADG21 (kg/d) or ADG 042 and ADG42
  2. Fitted models were the intercept-only model, containing only the overall sire effect on intercept; and the intercept-slope model, containing sire effect on intercept and slope for ADG21 or ADG42, respectively
  3. All other fixed effects/covariates and random effects were identical between models
  4. SE (in brackets) were calculated as the SD over 10,000 replicates
  5. rg is the simulated genetic correlation between ADG 021 or ADG 042 and ADG21 or ADG42
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Genetics Selection Evolution

ISSN: 1297-9686