Table 6.
Antibiotic susceptibility among 329 SE isolates in 3 breeder farms.
| Drugs | No. of drug-resistant strains (%) |
||||
|---|---|---|---|---|---|
| A n=144 | B n=70 | C n=115 | Total n=329 | ||
| β-Lactams | AMP | 93 (64.58) | 52 (74.29) | 45 (39.13) | 190 (57.75) |
| AMC | 68 (47.22) | 14 (20.00) | 1 (0.87) | 83 (25.23) | |
| CZO | 15 (10.42) | 4 (5.71) | 8 (6.96) | 27 (8.21) | |
| MEM | 3 (2.08) | 3 (4.29) | 0 (0) | 6 (1.82) | |
| ATM | 14 (9.72) | 3 (4.29) | 7 (6.09) | 24 (7.29) | |
| Aminoglycosides | KAN | 0 (0) | 4 (5.71) | 6 (5.22) | 10 (3.04) |
| GEN | 0 (0) | 4 (5.71) | 1 (0.87) | 5 (1.52) | |
| STR | 92 (63.89) | 50 (71.43) | 33 (28.70) | 175 (53.19) | |
| AMK | 0 (0) | 4 (5.71) | 0 (0) | 4 (1.22) | |
| Quinolones | CIP | 15 (10.42) | 57 (81.43) | 3 (2.61) | 75 (22.80) |
| ENR | 66 (45.83) | 33 (47.14) | 3 (2.61) | 102 (31.00) | |
| NAL | 143 (99.31) | 69 (98.57) | 105 (91.30) | 317 (96.35) | |
| Sulfonamides | SXT | 3 (2.08) | 4 (5.71) | 3 (2.61) | 10 (3.04) |
| Chloramphenicols | CHL | 1 (0.69) | 5 (7.14) | 13 (11.30) | 19 (5.78) |
| Nitrofurantoin | NIT | 134 (93.06) | 12 (17.14) | 2 (1.74) | 148 (44.98) |
Abbreviations: AMC, amoxicillin/clavulanic acid; AMK, amikacin; AMP, ampicillin; ATM, aztreonam; CHL, chloramphenicol; CIP, ciprofloxacin; CZO, cefazolin; ENR, enrofloxacin; GEN, gentamicin; KAN, kanamycin; MEM, meropenem; NAL, nalidixic acid; NIT, nitrofurantoin; SE, Salmonella Enteritidis; STR, streptomycin; SXT, trimethoprim/sulfamethoxazole.