Table 1. Performed and received abnormal behaviours (mean±S.D.) in neutral pigs (N) housed in tail biting pens (n = 60) compared to control pigs (C) housed in control pens (n = 99).
Performed | Received | ||||||||
D.F | N | C | P | T | N | C | P | T | |
Tail in mouth | 146 | 0.13±0.50 | 0.31±0.60 | 0.01 | 2.52 | 0.30±0.59 | 0.38±0.82 | n.s. | 0.24 |
Belly nosing | 146 | 0.30±0.62 | 0.95±1.59 | <0.01 | 2.64 | 0.42±1.46 | 1.06±2.60 | 0.06 | 1.89 |
Ear biting | 146 | 0.30±0.89 | 0.46±1.38 | n.s. | 1.14 | 0.52±1.05 | 0.54±1.22 | n.s. | −0.25 |
Mounting | 146 | 0.30±1.01 | 0.19±0.70 | n.s. | −1.19 | 0.63±1.40 | 0.18±0.48 | <0.01 | −2.75 |
Bar biting | 146 | 0.52±1.43 | 0.11±0.35 | 0.04 | −2.11 | ||||
Other abnormal | 146 | 0.42±1.06 | 1.53±4.26 | <0.01 | 3.42 | 0.97±1.00 | 1.34±1.92 | 0.02 | 2.42 |