Table 1.
Descriptive statistics of calf ages, weights, and background days on ranch and at receiving in Bos taurus cattle weaned in central Nebraska and received at the South Eastern Colorado Research Center (Fort Collins, CO)1
| Trait | n | Mean | SD | Minimum | Maximum |
|---|---|---|---|---|---|
| Weaning age, d | 1,376 | 135 | 21.27 | 72 | 191 |
| Year 1 | 791 | 134 | 22.83 | 91 | 191 |
| Year 2 | 585 | 137 | 18.86 | 72 | 173 |
| Weaning weight, kg | 1,395 | 158.0 | 26.48 | 81.7 | 240.4 |
| Year 1 | 802 | 161.1 | 25.49 | 90.7 | 236.8 |
| Year 2 | 593 | 153.7 | 27.21 | 81.7 | 240.4 |
| Background,2 d | 1,394 | 83 | 22.27 | 51 | 113 |
| Year 1 | 802 | 78 | 22.89 | 51 | 110 |
| Year 2 | 593 | 89 | 19.57 | 56 | 113 |
| Receiving weight, kg | 2,864 | 221.7 | 24.34 | 150.6 | 335.7 |
| Year 1 | 1,551 | 223.9 | 23.46 | 156.0 | 324.8 |
| Year 2 | 1,313 | 219.1 | 25.11 | 150.6 | 335.7 |
| Days after receiving BRD treated,3 d | 792 | 25 | 29.60 | 5 | 215 |
| Year 1 | 698 | 21 | 20.47 | 7 | 215 |
| Year 2 | 94 | 57 | 56.40 | 5 | 215 |
1Modified from McAllister (2010).
2Time spent after weaning but before shipping to feedlot.
3BRD = bovine respiratory disease. Year 1 steers were not vaccinated on receiving, whereas yr 2 steers were vaccinated for bovine viral diarrhea, Pasteurella multocida, and Mannheimia haemolytica.