Table 10.
Treatment effects of complete blood count for high-risk beef steers given metaphylaxis with a negative control, tulathromycin, ceftiofur, and florfenicol at arrival
| Treatment1 | ||||||
|---|---|---|---|---|---|---|
| Item | CON | DRA | EXC | NUF | SEM2 | P-value |
| Neutrophils, K/uL | 3.50 | 3.62 | 4.12 | 3.39 | 0.234 | 0.10 |
| Lymphocytes, K/uL | 5.70 | 6.07 | 6.13 | 6.14 | 0.151 | 0.12 |
| Eosinophils, K/uL | 0.29 | 0.31 | 0.34 | 0.30 | 0.031 | 0.77 |
| Neutrophils, % | 31.02 | 31.87 | 32.19 | 30.23 | 0.854 | 0.30 |
| Eosinophils, % | 2.91 | 2.92 | 2.97 | 2.77 | 0.247 | 0.51 |
| Basophil, % | 0.03 | 0.03 | 0.04 | 0.04 | 0.004 | 0.13 |
| Neutrophil:Lymphocyte ratio | 0.63 | 0.62 | 0.67 | 0.59 | 0.032 | 0.27 |
1CON = no metaphylaxis at arrival; DRA = tulathromycin (Draxxin, Zoetis) administered as metaphylaxis at arrival; EXC = ceftiofur (Excede, Zoetis) administered as metaphylaxis at arrival; NUF = florfenicol (Nuflor, Merck) administered as metaphylaxis at arrival.
2Largest standard error of least squares means.