Table 1.
Descriptive statistics of the 497 calves at the time of arrival
| Total ± SD (min.-max.) | Vaccinated ± SD (min.-max.) | Unvaccinated ± SD (min.-max.) | |
|---|---|---|---|
| n | 497 | 247 | 250 |
| Number of compartments | 14 | 7 | 7 |
| Sex: Male/female | 467/30 | 231/16 | 236/14 |
| Mean age at arrival/days | 17 ± 4.9 (10–45) | 16.7 ± 5.2 (10–45) | 17.2 ± 4.6 (10–34) |
| Mean weight at arrival/kg | 56.6 ± 8.8 (40–92) | 56.8 ± 9.2 (40–92) | 56.5 ± 8.4 (40–92) |
| Mean serum IgG a | 10.2 ± 5.8 (0.7–33.9) | 10.5 ± 5.9 (0.7–33.9) | 9.8 ± 5.6 (0.7–27.7) |
| Mean serum SAAa | 123.4 ± 81.1 (9.2–609.6) | 127.1 ± 81.4 (9.2–436.8) | 119.6 ± 80.7 (9.4–609.6) |
| Clinical condition a b | 2.7 ± 2.0 (0–10) | 2.7 ± 2.1 (0–10) | 2.8 ± 2.0 (0–10) |
| BRD diagnosis a b | 155 | 79 | 76 |
| Breeds (n): | |||
| Ayrshire | 191 | 87 | 104 |
| Holstein | 180 | 89 | 91 |
| Finnish cattle | 2 | 1 | 1 |
| Dairy beef crosses | 124 | 70 | 54 |
SD standard deviation, SAA Serum amyloid A, BRD Bovine respiratory disease,
a = Observed/measured at the first clinical examination, b = See the text for detailed description