Table 2.
Standard deviation of the herd average daily lying time (h/d) and lying bout duration (min/bout) with parity and hock injury status. Standard deviation of lying time and lying bout duration increased with multiple parities. Standard deviation of lying bout duration decreased when both hocks were injured or not injured.
| Variable | Estimate | SE | R² | p Value |
|---|---|---|---|---|
| SD of lying time (h/d) | ||||
| Multiparous | 0.31 | 0.13 | 0.30 | 0.02 |
| SD of lying duration (min/bout) | ||||
| Bilateral injury | −14.41 | 4.44 | 0.07 | 0.001 |
| No injury | −17.86 | 4.99 | 0.07 | 0.0004 |
| Multiparous | 5.02 | 2.49 | 0.02 | 0.05 |