Research Article
Prevalence, Risk Factors, and Antibiogram of Nontyphoidal Salmonella from Beef in Ambo and Holeta Towns, Oromia Region, Ethiopia
Table 3
Antimicrobial susceptibility test of Salmonella isolates from meat samples of Ambo and Holeta towns, central Ethiopia.
| | Antimicrobial class | Antimicrobial discs and concentration | Salmonella isolates (n = 20) | | No. of susceptible isolates (%) | No. of. intermediate isolates (%) | No. of. resistant isolates (%) |
| | Aminoglycosides | Amikacin (30 μg) | 15 (75.0) | 5 (25.0) | 0 (0.0) | | Gentamicin (10 μg) | 16 (80.0) | 2 (10.0) | 2 (10.0) | | Cephems | Cefotaxime (30 μg) | 17 (85.0) | 1 (5.0) | 2 (10.0) | | Ceftazidime (30 μg) | 16 (80.0) | 0 (0.0) | 4 (20.0) | | Ceftriaxone (5 μg) | 15 (75.0) | 1 (5.0) | 4 (20.0) | | Macrolide | Azithromycin (30 μg) | 3 (15.0) | 9 (45.0) | 8 (40.0) | | Nitrofurans | Nitrofurantoin (300 μg) | 16 (80.0) | 1 (5.0) | 3 (15.0) | | Phenicols | Chloramphenicol (30 μg) | 19 (95.0) | 0 (0.0) | 1 (5.0) | | Quinolones | Ciprofloxacin (5 μg) | 12 (60.0) | 8 (40.0) | 0 (0.0) | | Nalidixic acid (30 μg) | 15 (75.0) | 0 (0.0) | 5 (25.0) | | Norfloxacin (10 μg) | 19 (95.0) | 1 (5.0) | 0 (0.0) | | Sulphonamides | Cotrimoxazole (25 μg) | 20 (100.0) | 0 (0.0) | 0 (0.0) | | Tetracycline | Tetracycline (30 μg) | 17 (85.0) | 0 (0.0) | 3 (15.0) | | β-Lactams | Ampicillin (10 μg) | 18 (90.0) | 1 (5.0) | 1 (5.0) | | Amoxicillin (25 μg) | 5 (25.0) | 9 (45.0) | 6 (30.0) |
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