TABLE 3.
Results of antimicrobial susceptibility testing of Salmonella isolates obtained in the present study.
| Antimicrobial class | Antimicrobial agents | No. of isolates (%) | |||||
| Resistant (R) | Intermediate (I) | Susceptible (S) | |||||
| Penicillins | Ampicillin (AMP, 10 μg) | 99 | (45.4) | 0 | (0.0) | 119 | (54.6) |
| β-Lactam/β-lactamase inhibitor combinations | Amoxicillin-clavulanic acid (AMC, 30 μg) | 49 | (22.5) | 27 | (12.4) | 142 | (65.1) |
| Cephems | Cefazolin (CFZ, 30 μg) | 37 | (17.0) | 49 | (22.5) | 132 | (60.6) |
| Cefoxitin (FOX, 30 μg) | 16 | (7.3) | 7 | (3.2) | 195 | (89.4) | |
| Ceftriaxone (CRO, 30 μg) | 12 | (5.5) | 2 | (0.9) | 204 | (93.6) | |
| Cefotaxime (CTX, 30 μg) | 10 | (4.6) | 2 | (0.9) | 206 | (94.5) | |
| Ceftazidime (CAZ, 30 μg) | 24 | (11.0) | 4 | (1.8) | 190 | (87.2) | |
| Ceftiofur (EFT, 30 μg) | 10 | (4.6) | 8 | (3.7) | 200 | (91.7) | |
| Cefepime (FEP, 30 μg) | 14 | (6.4) | 9 | (4.1) | 195 | (89.4) | |
| Monobactams Carbapenems | Aztreonam (ATM, 30 μg) | 7 | (3.2) | 3 | (1.4) | 208 | (95.4) |
| Imipenem (IPM, 10 μg) | 2 | (0.9) | 6 | (2.8) | 210 | (96.3) | |
| Aminoglycosides | Gentamicin (GEN, 10 μg) | 33 | (15.1) | 11 | (5.0) | 174 | (79.8) |
| Kanamycin (KAN, 30 μg) | 42 | (19.3) | 18 | (8.3) | 158 | (72.5) | |
| Amikacin (AMK, 30 μg) | 11 | (5.0) | 4 | (1.8) | 203 | (93.1) | |
| Streptomycin (STR, 10 μg) | 88 | (40.4) | 64 | (29.4) | 66 | (30.3) | |
| Tetracyclines | Tetracycline (TET, 30 μg) | 143 | (65.6) | 12 | (5.5) | 63 | (28.9) |
| Quinolones and fluoroquinolones | Nalidixic acid (NAL, 30 μg) | 78 | (35.8) | 35 | (16.1) | 105 | (48.2) |
| Ciproflaxin (CIP, 5 μg) | 35 | (16.1) | 76 | (34.9) | 107 | (49.1) | |
| Enrofloxacin (ENR, 5 μg) | 64 | (29.4) | 48 | (22.0) | 106 | (48.6) | |
| Folate pathway antagonists | Trimethoprim-sulfamethoxazole (SXT, 25 μg) | 89 | (40.8) | 9 | (4.1) | 120 | (55.0) |
| Phenicols | Chloramphenicol (CHL, 30 μg) | 66 | (30.3) | 17 | (7.8) | 135 | (61.9) |
| Florfenicol (FFC, 30 μg) | 76 | (34.9) | 40 | (18.3) | 102 | (46.8) | |
| Pansusceptible | 12 | (5.5) | |||||
| ≥ 1 Antimicrobial class | 181 | (83.0) | ≥ 1 Antimicrobial | 181 | (83.0) | ||
| ≥ 3 Antimicrobial class | 128 | (58.7) | ≥ 3 Antimicrobials | 132 | (60.6) | ||
| ≥ 5 Antimicrobial class | 78 | (35.8) | ≥ 6 Antimicrobials | 72 | (33.0) | ||
| ≥ 7 Antimicrobial class | 25 | (11.5) | ≥ 10 Antimicrobials | 28 | (12.8) | ||
| ≥ 9 Antimicrobial class | 4 | (1.8) | ≥ 15 Antimicrobials | 6 | (2.8) | ||