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Table 2 Accuracy of EBV and bias (regression of true BV on EBV) [mean (SD) of 100 replicates] from different models with estimated variance components for the base scenario (L2×3)

From: Estimation of variance components and prediction of breeding values based on group records from varying group sizes

Litter and pen effects simulated

Model

Group records

Individual records

Accuracy

Bias

Accuracy

Bias

Yes

MA

0.478 (0.038)

0.95 (0.107)

0.674 (0.019)

0.77 (0.028)

 

MAL

0.478 (0.038)

1.01 (0.122)

0.693 (0.019)

1.00 (0.045)

 

MAP

0.479 (0.038)

0.96 (0.108)

0.691 (0.018)

0.83 (0.028)

 

MALP

0.479 (0.038)

1.01 (0.121)

0.702 (0.019)

1.00 (0.042)

No

MA

0.550 (0.031)

1.01 (0.065)

0.714 (0.017)

1.00 (0.031)

 

MAL

0.550 (0.031)

1.03 (0.069)

0.714 (0.017)

1.01 (0.031)

 

MAP

0.550 (0.031)

1.02 (0.066)

0.714 (0.017)

1.00 (0.031)

 

MALP

0.550 (0.031)

1.03 (0.070)

0.714 (0.017)

1.01 (0.031)

  1. EBV, estimated breeding value; SD, standard deviation; MA, model includes additive genetic effects; MAL, model includes additive genetic and litter effects; MAP, model includes additive genetic and pen effects; MALP, model includes additive genetic, litter and pen effects