Table 5.
Behavior of steers weaned abruptly (A, 237 d age), after placement of a nose flap for 7 d (N, 237 d age), or after a 49-d delay (D, 286 d age) presented by treatment least square mean (LSM) or daily observations with standard errors (SEM)
| Treatment | ||||||
|---|---|---|---|---|---|---|
| Behavior (units) | Observation period | LSM or day no. | A | N | D | SEM |
| Suckling or attempt (% of observations) | Baseline week | LSM | 4.8b,x | 2.8a,x | 2.3a | 0.7 |
| Nose flap in | LSM | 7.4b,y | 4.7a,y | N/A | 0.7 | |
| Noseflap day | 1 | 9.0b,y | 6.0a,y | N/A | 1.4 | |
| Noseflap day | 2 | 4.6x | 5.4xy | N/A | ||
| Noseflap day | 3 | 6.7xy | 4.9xy | N/A | ||
| Noseflap day | 4 | 9.2b,y | 2.5a,x | N/A | ||
| Pacing (% of observations) | Postweaning | LSM | 6.6 | 3.2 | 4.1 | 1.6 |
| Postweaning day | 1 | 18.8b,z | 2.8a | 11.7ab,y | 3.5 | |
| Postweaning day | 2 | 7.2y | 2.1 | 4.2xy | ||
| Postweaning day | 3 | 0x | 5.4 | 0.8x | ||
| Postweaning day | 4 | 1.1x | 2.4 | 0x | ||
| Vocalizations (count per hour) | Baseline week | LSM | 3.3x | 2.0x | 1.0x | 1.5 |
| Nose flap in | LSM | 2.9x | 3.5x | N/A | 1.3 | |
| Postweaning | LSM | 20.6c,y | 7.3a,y | 14.4b,y | 1.5 | |
| Postweaning day | 1 | 46.5c,y | 12.8a,y | 39.3b,y | 3.0 | |
| Postweaning day | 2 | 26.8c,y | 6.8a,x | 13.9b,y | ||
| Postweaning day | 3 | 6.1x | 5.5x | 3.4x | ||
| Postweaning day | 4 | 3.1x | 4.1x | 0.9x | ||
| Eating forage (% of observations) | Baseline week | LSM | 45.0y | 45.0y | 46.3y | 2.1 |
| Nose flap in | LSM | 44.0y | 46.0y | N/A | 2.1 | |
| Postweaning | LSM | 13.1a,x | 22.3b,x | 25.9b,x | 2.1 | |
| Postweaning day | 1 | 8.7a,x | 23.8b | 31.4b | 4.1 | |
| Postweaning day | 2 | 12.8x | 21.1 | 23.2 | ||
| Postweaning day | 3 | 20.1y | 25.5 | 28.7 | ||
| Postweaning day | 4 | 10.9x | 18.6 | 20.1 | ||
| Lying down (% of observations) | Baseline week | LSM | 22.6b,x | 21.8b,xy | 14.3a | 2.2 |
| Nose flap in | LSM | 25.2x,y | 20.6x | N/A | 2.2 | |
| Postweaning | LSM | 30.9b,y | 30.1b,y | 14.9a | 2.2 | |
a,bValues without common superscripts differ between treatments within period (P < 0.05).
x,y,zValues without common superscripts differ between periods or days within treatment (P < 0.05).