Table 6.
Associations between immune competence phenotype and stress responsiveness (WtGain) and temperament (FT, CS) traits1
| WtGain2 | logFT2 | CS2 | |
|---|---|---|---|
| Ab-IR3 | P < 0.01 | ns | ns |
| High (n = 170) | 0.13 (0.10)a | −0.18 (0.05) | 1.50 (0.05) |
| Avg (n = 768) | 0.39 (0.05)b | −0.17 (0.04) | 1.44 (0.04) |
| Low (n = 180) | 0.36 (0.05)b | −0.14 (0.05) | 1.41 (0.04) |
| Cell-IR3 | P < 0.01 | ns | ns |
| High (n = 169) | 0.56 (0.09)a | −0.13 (0.05) | 1.39 (0.05) |
| Avg (n = 755) | 0.34 (0.05)b | −0.17 (0.04) | 1.44 (0.03) |
| Low (n = 177) | 0.16 (0.09)c | −0.13 (0.05) | 1.50 (0.04) |
1Values in table are least squares means for traits in calves classified as high, average, or low responders for Ab-IR and Cell-IR.
2WtGain = average daily weight gain during the yard weaning period, FT = flight time, CS = crush score. Where the group effect was significant, least squares means with different superscripts are significantly different.
3Cell-IR = cell-mediated immune responses, Ab-IR = antibody-mediated immune responses. Significance of group effect shown in table row, ns = nonsignificant. n = number of animals in phenotype grouping.