Table 2.
Joint angles (degrees) of breeding herd female feet leg conformation traits1 (least squares means ± SE) at age of selection and post first parity
| Entire population2 | Subpopulation3 | |||||||
|---|---|---|---|---|---|---|---|---|
| Selection | Post first parity | Selection | Post first parity | |||||
| LS Means | SE | LS Means | SE | LS Means | SE | LS Means | SE | |
| Knee | 164.7a | 0.3 | 158.3b | 0.3 | 164.7a | 0.5 | 158.6b | 0.5 |
| Front pastern | 54.7a | 0.3 | 52.1b | 0.4 | 54.8a | 0.6 | 51.6b | 0.6 |
| Rear pastern | 57.6a | 0.3 | 50.3b | 0.3 | 57.5a | 0.5 | 50.1b | 0.5 |
| Hock | 140.8a | 0.3 | 146.9b | 0.3 | 141.1a | 0.5 | 146.4b | 0.5 |
| Rear stance | 91.9a | 0.3 | 86.6b | 0.4 | 91.4a | 0.6 | 86.2b | 0.6 |
1Evaluated as per Stock et al. (2017) using an objective method based on digital images.
2Females evaluated approximately at 150 d of age at the point of selection (n = 319) and 0 to 12 wk of second gestation post first parity (n = 277).
3Females evaluated approximately at 150 d of age at the point of selection (n = 319) and subpopulation of second gestation post first parity evaluated between 0 and 3 wk (n = 126).
a,bWithin row and population, significant differences between predictor variables; P < 0.05.