Table 5.
Effect of treatment on inhibitory zones of E. coli isolates in feces growing pigs, mm
| Treatment | Control | AGP | Selacid GG | SEM | P-value |
|---|---|---|---|---|---|
| Colistin (10 µg) | 6.25 | 5.75 | 5.86 | 1.401 | 0.966 |
| Amox-colistin (10/10 µg) | 2.38 | 2.13 | 3.43 | 1.711 | 0.862 |
| Amoxicillin/clavulanic acid (20/10 µg) | 15.50ab | 12.13b | 17.29a | 0.936 | 0.004 |
| Pen-strep (15/15 µg) | 7.38 | 7.88 | 8.29 | 1.772 | 0.940 |
| Flo-doxy (40/20 µg) | 11.13 | 11.75 | 11.57 | 1.854 | 0.970 |
| Flumequin (30 µg) | 9.50 | 12.50 | 10.86 | 2.647 | 0.728 |
| Cefotaxime (30 µg) | 19.50a | 14.38b | 19.86a | 1.618 | 0.048 |
| Ceftiofur (30 µg) | 15.50 | 11.25 | 16.14 | 1.895 | 0.175 |
| Ciprofloxacin (5 µg) | 16.63 | 12.63 | 16.43 | 2.064 | 0.330 |
| Norfloxacin (10 µg) | 14.25 | 14.50 | 15.29 | 2.320 | 0.952 |
| Enrofloxacin (5 µg) | 12.13 | 14.50 | 14.43 | 2.550 | 0.762 |
a,bValues in a row with no common superscripts differ significantly (P ≤ 0.05).