Table 4.
Behavioral event results (mean ± SE) on individual pigs for the three treatments. The numbers in parentheses indicate how many animals out of 18 in each treatment performed that specific behavior listed under column 2, “Variable”.
| Variable (Frequency) 1 | Carbon Dioxide | Carbon Dioxide with Butorphanol | Nitrous Oxide | p-Value |
|---|---|---|---|---|
| Escape Attempts | 4.67 ± 1.55 a | 16.44 ± 4.23 b | 0.3333 ± 0.24 a | 0.0004 |
| (14) | (16) | (4) | ||
| Righting Attempts | 2.78 ± 0.60 | 1.11 ± 0.45 | 2.33 ± 0.75 | 0.2212 |
| (16) | (12) | (14) | ||
| Paddle Bouts | 6.11 ± 1.09 b | 2.11 ± 0.39 b | 10.56 ± 1.46 a | 0.0002 |
| (16) | (14) | (17) | ||
| Squeals/(min) | 2.80 ± 1.17 b | 1.28 ± 0.55 b | 9.02 ± 1.62 a | 0.0016 |
| (18) | (18) | (18) | ||
| Grunts/(min) | 16.46 ± 2.04 | 12.29 ± 2.03 | 20.97 ± 5.22 | 0.2015 |
| (18) | (17) | (18) |
1 min = minute, a,b Means within a row with unlike superscripts differ (p < 0.05).