Table 3.
Heritability estimates of seasonal animal resilience phenotypes and correlation with lifetime milk production at different temperature levels (standard errors in parentheses).
| Resilience phenotype | Season | h2 | rP | rA |
|---|---|---|---|---|
| Tavg10 | Autumn | 0.15 (0.02)* | − 0.49 (0.01)* | − 0.75 (0.05)* |
| Winter | 0.13 (0.01)* | − 0.30 (0.01)* | − 0.27 (0.07)* | |
| Spring | 0.14 (0.03)* | 0.69 (0.01)* | 0.84 (0.05)* | |
| Tavg10_lag7 | Autumn | 0.16 (0.02)* | − 0.29 (0.01)* | − 0.43 (0.06)* |
| Winter | 0.12 (0.01)* | − 0.21 (0.01)* | − 0.09 (0.07) | |
| Spring | 0.09 (0.02)* | 0.36 (0.01)* | 0.71 (0.12)* | |
| Tavg25 | Autumn | 0.17 (0.02)* | − 0.76 (0.00)* | − 0.89 (0.02)* |
| Winter | 0.16 (0.01)* | − 0.78 (0.00)* | − 0.85 (0.02)* | |
| Spring | 0.03 (0.02) | − 0.35 (0.01)* | − 0.02 (0.21) | |
| Tavg25_lag7 | Autumn | 0.17 (0.02)* | − 0.51 (0.01)* | − 0.71 (0.05)* |
| Winter | 0.17 (0.02)* | − 0.49 (0.01)* | − 0.55 (0.05)* | |
| Spring | 0.12 (0.03)* | − 0.40 (0.01)* | − 0.52 (0.11)* |
Tavg10, Tavg25: milk yield change by 1 °C temperature change at 10 °C and 25 °C on the milk test date, respectively; Tavg10_lag7, Tavg25_lag7: milk yield change by 1 °C cumulative average air temperature change during the week preceding the milk test date, h2 Heritability, rP Phenotypic correlation with corresponding lifetime milk production, rA Genetic correlation with corresponding lifetime milk production. Estimates significantly different from zero (P < 0.01) are indicated with an asterisk.