Table-4.
Antibiotic susceptibility of 38 E. coli isolates from imported flocks using disk diffusion.
| Antimicrobial class | Antimicrobial agent | Sensitive rate (%) | Intermediate sensitive (%) | Resistant rate (%) |
|---|---|---|---|---|
| β-lactams | Penicillin | 0 | 0 | 100 |
| β-lactam/β-lactamase inhibitor | Amoxicillin-clavulanic acid | 79 | 15.8 | 5.2 |
| β-lactam (cephalosporin) | Cefotaxime | 39.5 | 0 | 60.5 |
| β-lactam (carbapenem) | Imipenem | 97.4 | 0 | 2.6 |
| Sulfonamides | Trimethoprim/sulfamethoxazole | 44.8 | 13.1 | 42.1 |
| Aminoglycosides | Streptomycin | 39.5 | 23.7 | 36.8 |
| Gentamycin | 71 | 10.6 | 18.4 | |
| Tetracycline | Doxycycline | 42.1 | 31.6 | 26.3 |
| Tetracycline | 39.6 | 15.7 | 44.7 | |
| Fluoroquinolones | Norfloxacin | 71 | 8 | 21 |
| Levofloxacin | 84.2 | 0 | 15.8 | |
| Ciprofloxacin | 68.5 | 5.2 | 26.3 | |
| Quinolones | Nalidixic acid | 52.6 | 2.7 | 44.7 |
| Phenicols | C30 | 86.9 | 0 | 13.1 |
| Macrolide | Erythromycin | 0 | 0 | 100 |
| Nitrofurans | Nitrofurantoins | 86.9 | 0 | 13.1 |