|
Estimate
|
TNB
|
LnVarTNB
|
varTNB
|
|---|
|
Permanent sow variance
|
0.86 (0.01)
|
–
|
0.15 (0.003)
|
|
Additive genetic variance
|
1.33 (0.2)
|
0.033 (0.001)
|
0.037 (0.002)
|
|
Residual variance
|
7.67 (0.8)
|
1.33 (0.4)
|
0.84
|
|
Heritability
|
0.135 (0.02)
|
0.024 (0.002)a
|
0.036a
|
|
\({\mathrm{GCV}}_{\mathrm{SDe}}\)b
|
–
|
0.091
|
0.096
|
- TNB: litter size as total number born
- LnVarTNB: phenotypic variability of litter size estimated by the log-transformed variance of residuals
- varTNB: phenotypic variability estimated with double hierarchical generalized linear model measured in 121,088 sows from the Large White pig population
- aHeritability is a measure of the reliability of EBV for LnVarTNB and varTNB; it does not reflect the magnitude of the genetic variance in varTNB
- bMeasure of the genetic variation in residual variance \({\mathrm{GCV}}_{\mathrm{SDe}}=\frac{{\upsigma }_{\mathrm{a}ddv}\left({\upsigma }_{\mathrm{e}}\right)}{\overline{{\upsigma }_{\mathrm{e}}}}\approx \frac{1}{2}{\upsigma }_{\mathrm{avar}} \,{\text{or} }\,\approx \frac{1}{2}{\upsigma }_{\mathrm{av}}\)
