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Table 6 Reaction norm variance components estimated in the INF/RF and MERINOSELECT (MS) data

From: Validation of reaction norm breeding values for robustness in Australian sheep

Model

\({{\upsigma }}_{{\text{a}}_{0} }^{2}\) (kg2)

\({{\upsigma }}_{{\text{a}}_{1} }^{2}\) (kg2/SD EC)

\({{\upsigma }}_{{\text{a}}_{1}}^{2}/{{\upsigma}}_{{\text{a}}_{0}}^{2}\)

\({\text{r}}_{\text{a}0\text{a}1 }\)

g2

c2

m2

INF/RF

11.35 (0.96)

1.98 (0.88)

0.17

0.64

7.60 (2.04)

1.64 (0.33)

–

MS

8.06 (0.18)

1.00 (0.08)

0.12

0.60

4.47 (0.61)

1.28 (0.08)

0.95 (0.08)

  1. Standard errors are given in parentheses
  2. \({{\upsigma }}_{\text{a}0 }^{2}\): additive genetic intercept; \({{\upsigma }}_{\text{a}1 }^{2}\): additive genetic slope; \({{\upsigma }}_{\text{a}1 }^{2}/{{\upsigma }}_{\text{a}0 }^{2}\): ratio of intercept and slope variance; \({\text{r}}_{\text{a}0\text{a}1 }\): correlation between intercept and slope; g2: genetic group; c2: permanent environmental dam; m2: maternal variance
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Genetics Selection Evolution

ISSN: 1297-9686