Table 3.
Antimicrobial resistance rates of E. coli from chickens among sampled farms.
| Results | Total (n = 107) |
Farm A (n = 32) |
Farm B (n = 37) |
Farm C (n = 38) |
p-Value * |
|---|---|---|---|---|---|
| MDR | |||||
| Yes | 96 (89.7) | 28 (87.5) | 36 (97.3) | 32 (94.2) | 0.147 |
| ESBL | |||||
| Yes | 77 (71.9) | 20 (62.5) | 33 (89.2) | 24 (63.2) | 0.012 |
| Amphenicols | |||||
| Chloramphenicol | 72 (67.3) | 22 (68.8) | 21 (56.8) | 29 (76.3) | 0.200 |
| Tetracyclines | |||||
| Tetracycline | 86 (80.4) | 27 (84.4) | 23 (62.2) | 36 (94.7) | 0.002 |
| Sulfonamides | |||||
| Trimethoprim/sulfamethoxazole | 102 (95.3) | 31 (96.9) | 37 (100.0) | 34 (89.5) | 0.078 |
| Aminoglycosides | |||||
| Gentamicin | 64 (59.8) | 23 (71.9) | 21 (56.8) | 20 (52.6) | 0.246 |
| Macrolides | |||||
| Azithromycin | 2 (1.9) | 0 (0.0) | 1 (2.7) | 1 (2.6) | 1.000 |
| Penicillins | |||||
| Amoxicillin | 93 (86.9) | 29 (90.6) | 35 (94.6) | 29 (76.3) | 0.067 |
| Cephalosporins | |||||
| Cefalotin | 84 (78.5) | 21 (65.6) | 35 (94.6) | 28 (73.7) | 0.007 |
| Cefepime | 12 (11.2) | 4 (12.5) | 5 (13.5) | 3 (7.9) | 0.742 |
| Carbapenems | |||||
| Meropenem | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | N.A. |
| Quinolones | |||||
| Nalidixic Acid | 91 (85.1) | 26 (81.3) | 36 (97.3) | 29 (76.3) | 0.021 |
| Ciprofloxacin | 72 (67.3) | 15 (46.9) | 32 (86.5) | 25 (65.8) | 0.002 |
* Fisher exact test, 95% confidence level. N.A.: Not applicable.