Table 3.
Mean colony forming units (±standard error, n = 3) per ml of fresh (< 2 h old) 1% (vol vol−1) waste milk from Ceftiofur-treated and untreated cows in base medium, and base medium without a carbon source.
| Treatment | Luria Broth (× 103) | Sheep's blood | MacConkey | |||
|---|---|---|---|---|---|---|
| α (× 102) | β (× 102) | λ (× 102) | Fermenter | Non-fermenter | ||
| WITHOUT HEAT TREATMENT | ||||||
| Ceftiofur-treated | 5.7 ± 4.2 | 7.0 ± 3.0 | 2.0 ± 0.3 | 93 ± 77 | 0 | 0 |
| Untreated | 4.4 ± 3.7 | 4.3 ± 3.8 | 4.6 ± 2.8 | 2.6 ± 1.2 | 3 ± 3 | 66 ± 56 |
| Control | 0 | 0 | 0 | 0 | 0 | 0 |
| 100 h at 82°C | ||||||
| Ceftiofur-treated | 0 | 0 | 0 | 0 | 0 | 0 |
| Untreated | 0 | 0 | 0 | 0 | 0 | 0 |
| Control | 0 | 0 | 0 | 0 | 0 | 0 |