Table 2 Estimates and SD for phenotypic variances (\({\sigma }_{\mathrm{P}}^{2}\)) and variance components, as a proportion of \({\sigma }_{\mathrm{P}}^{2}\), obtained with single-trait models for fertility and litter size
From: Direct and correlated responses to selection for autumn lambing in sheep
Item | Fertility | Litter size | |
|---|---|---|---|
Linear model | Threshold model | ||
Heritability | 0.07 ± 0.01 | 0.15 ± 0.04 | 0.04 ± 0.02 |
Repeatability | 0.14 ± 0.02 | 0.28 ± 0.03 | 0.12 ± 0.03 |
Service sire | 0.07 ± 0.01 | 0.13 ± 0.02 | 0.01 ± 0.01 |
\({\sigma }_{\mathrm{P}}^{2}\) | 0.189 ± 0.005 | 1.72 ± 0.11 | 0.34 ± 0.01 |