Table 4.
Morbidity and mortality
| Item | TCD1 | TFFE2 | SE | P-value |
|---|---|---|---|---|
| d 0 to 90 | ||||
| FirstBRDtreatments, % | 27.8 | 34.4 | 4.51 | 0.054 |
| Metaphylaxis success rate, % | 72.2 | 65.6 | 4.51 | 0.054 |
| SecondBRDtreatments, % | 8.5 | 11.1 | 2.12 | 0.182 |
| Second BRD treatments as a % of first | 31.5 | 32.9 | 4.65 | 0.802 |
| BRD3 Mortality, % | 6.5 | 10.4 | 2.32 | 0.043 |
| d 91 to closeout | ||||
| FirstBRDtreatments, % | 0.6 | 1.6 | 0.45 | 0.179 |
| SecondBRDtreatments, % | 0.4 | 0.8 | 2.34 | 0.443 |
| BRD mortality, % | 0.8 | 1.7 | 4.86 | 0.217 |
| d 0 to closeout | ||||
| FirstBRDtreatments, % | 28.5 | 36.1 | 4.44 | 0.032 |
| Temperature at first treatment, C° | 40.2 | 40.2 | 0.17 | 0.671 |
| Clinical attitude score4 | 1.40 | 1.41 | 0.063 | 0.984 |
| Second BRD treatments, % | 8.8 | 11.8 | 2.25 | 0.141 |
| Total BRD treatments | 39.2 | 49.8 | 3.00 | 0.082 |
| BRD mortality, % | 7.4 | 12.4 | 2.40 | 0.023 |
| BRD case fatality rate, % | 27.9 | 43.0 | 7.34 | 0.120 |
Metaphylaxis with tulathromycin (2.5 mg/kg BW), followed by first BRD treatment with ceftiofur crystalline acid (6.6 mg/kg BW), followed by second BRD treatment with danofloxacin (8 mg/kg BW).
Metaphylaxis with tildipirosin (4 mg/kg BW), followed by first BRD treatment with florfenicol-flunixin meglumine (40 mg/kg BW; 2.2 mg/kg BW), followed by second BRD treatment with enrofloxacin (12.5 mg/kg BW).
Bovine respiratory disease.
A score ranging from 0 (normal) to 4 (moribund) based on clinical and behavioral signs of BRD.