Table 4.
Means ± SEM for number of attempts to induce, number of vocalizations, latency to look, and latency to right during a tonic immobility test conducted on progeny from Experiment 1 at 9 weeks of age.
| Experiment 1 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Variable | Overall P-value | |||||||
| ATI | V | LL | LR | ATI | V | LL | LR | |
| # Attempts to induce | # Vocalizations | Latency to look | Latency to right | |||||
| Maternal age | 0.0910 | 0.0034 | 0.3242 | 0.8098 | ||||
| Young | 1.77 ± 0.11 | 2.76 ± 0.5bab | 75.7 ± 7.47 | 174.4 ± 11.78 | ||||
| Ideal | 2.03 ± 0.12 | 3.01 ± 0.78a | 85.4 ± 9.46 | 189.0 ± 14.33 | ||||
| Old | 1.66 ± 0.10 | 2.69 ± 0.67b | 63.3 ± 6.01 | 172.1 ± 11.4 | ||||
| Maternal rearing × adult housing | 0.7775 | 0.0980 | 0.0659 | 0.2490 | ||||
| Trt 1 (AV × AV) | 1.80 ± 0.14 | 2.91 ± 0.77 | 65.8 ± 7.86 | 182.8 ± 16.50 | ||||
| Trt 2 (CC × CC) | 1.84 ± 0.14 | 3.57 ± 1.15 | 85.2 ± 11.65 | 182.8 ± 16.72 | ||||
| Trt 3 (AV × CC) | 1.70 ± 0.12 | 3.26 ± 1.02 | 63.5 ± 8.41 | 188.1 ± 17.21 | ||||
| Trt 4 (CC × FC) | 1.85 ± 0.14 | 1.78 ± 0.60 | 97.8 ± 12.3 | 187.9 ± 15.71 | ||||
| Trt 5 (AV × FC) | 1.91 ± 0.15 | 2.52 ± 0.69 | 60.44 ± 8.25 | 149.0 ± 14.05 | ||||
| Sex | 0.0003 | < 0.0001 | < 0.0001 | 0.7017 | ||||
| Cockerel | 1.59 ± 0.07b | 0.17 ± 0.05b | 92.2 ± 7.22a | 178.7 ± 10.2 | ||||
| Pullet | 2.05 ± 0.10a | 5.74 ± 0.77a | 54.9 ± 4.52b | 177.8 ± 10.1 | ||||
| Materal age × sex | 0.1647 | < 0.0141 | 0.3414 | 0.5522 | ||||
| Maternal age × Trt | 0.4415 | < 0.0001 | 0.7681 | 0.1832 | ||||
| Trt × Sex | 0.4981 | < 0.0001 | 0.1637 | 0.0171 | ||||
abValues within a column for Maternal Age and Sex with different superscripts differ P < 0.05.