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Table 2 Antimicrobial resistance pattern of E. coli isolates from chicken visceral organs

From: Identification and antimicrobial susceptibility profile of Escherichia coli isolated from backyard chicken in and around ambo, Central Ethiopia

Antimicrobial class Antimicrobial discs and concentration E. coli isolates (n = 82)
No susceptible (%) No Intermediate (%) No Resistant (%)
Aminoglycosides Streptomycin (10 μg) 70 (85) 12 (15) 0 (0)
Kanamycin (30 μg) 62 (75) 12 (15) 8 (10)
Gentamicin (30 μg) 73 (89) 9 (11) 0 (0)
Amikacin (30 μg) 57 (69.6) 19 (23.1) 6 (7.3)
β-lactams Amoxicillin (20 μg) 0 (0) 0 (0) 82 (100)
Cloxcillin (5 μg) 0 (0) 0 (0) 82 (100)
Cephems Cefuroxime (30 μg) 0 (0) 0 (0) 82 (100)
Ceftazidime (30 μg) 69 (84.6) 0 (0) 13 (15.4)
Cefotaxime (30 μg) 0 (0) 6 (7.3) 76 (92.7)
Phenicols Chloramphenicol (30 μg) 52 (63.4) 16 (19.5) 14 (17.1)
Quinolones Ciprofloxacin (5 μg) 82 (100) 0 (0) 0 (0)
Nalidxic acid (30 μg) 68 (83) 8 (9.7) 6 (7.3)
Nitrofurans Nitrofurantoin (10 μg) 63 (76.8) 1 (1.2) 18 (23.2)
Tetracyclines Tetracycline (30 μg) 44 (53.7) 0 (0) 38 (46.3)
Folate pathway inhibitors Sulfamethoxazole-trimethoprim (1.25/23.75 μg) 82 (100) 0 (0) 0 (0)
Fluoroquinolones Norfloxacin (10 μg) 82 (100) 0 (0) 0 (0)