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Table 3 Estimates of variance components and (±) standard errors for litter size and gestation length

From: Genomic selection for crossbred performance accounting for breed-specific effects

Populationa

Modelb

\(\sigma_{s}^{2}\)

\(\sigma_{r}^{2}\)

\(\sigma_{a}^{2}\)

\(\sigma_{{a_{LW} }}^{2}\)

\(\sigma_{{a_{LR} }}^{2}\)

\(\sigma_{e}^{2}\)

h 2

Litter size

 LW

GS

0.43 ± 0.13

1.70 ± 0.30

1.81 ± 0.36

–

–

8.26 ± 0.25

0.15 ± 0.03

 LR

GS

0.02 ± 0.09

1.22 ± 0.28

1.30 ± 0.31

–

–

8.80 ± 0.27

0.12 ± 0.03

 F1

GS

0.10 ± 0.10

1.38 ± 0.28

1.42 ± 0.34

–

–

8.54 ± 0.24

0.12 ± 0.03

 F1

BS

0.11 ± 0.10

1.37 ± 0.29

–

0.74 ± 0.23

0.56 ± 0.245

8.52 ± 0.24

0.12 ± 0.03

Gestation length

 LW

GS

0.21 ± 0.03

0.33 ± 0.05

0.68 ± 0.09

–

–

0.78 ± 0.02

0.34 ± 0.04

 LR

GS

0.23 ± 0.03

0.26 ± 0.05

0.64 ± 0.09

–

–

0.82 ± 0.03

0.33 ± 0.04

 F1

GS

0.16 ± 0.02

0.23 ± 0.06

0.81 ± 0.11

–

–

0.90 ± 0.03

0.39 ± 0.04

 F1

BS

0.16 ± 0.02

0.17 ± 0.06

–

0.42 ± 0.08

0.40 ± 0.08

0.90 ± 0.03

0.40 ± 0.04

  1. Variance components: service sire (\(\sigma_{s}^{2}\)), permanent environment (\(\sigma_{r}^{2}\)), additive (\(\sigma_{a}^{2}\)), additive for the alleles of the F1 population inherited from the LW (\(\sigma_{{a_{LW} }}^{2}\)) and LR (\(\sigma_{{a_{LR} }}^{2}\)) populations, and error (\(\sigma_{e}^{2}\)). h 2: heritability
  2. aLarge White (LW), Landrace (LR), two-way crossbred (F1)
  3. bTraditional genomic selection model (GS) and a model that accounts for breed-specific effects (BS)