Research Article

Isolation, Identification, and Genetic Characterization of Antibiotic Resistance of Salmonella Species Isolated from Chicken Farms

Table 2

Breakpoint values of each antimicrobial agent according to [36].

Antimicrobial agent(s) testedDisc concentrationSalmonella isolates
Resistant ≤ mmIntermediate (mm)Sensitive ≥ mm

Ampicillin (AM)10 μg1314 : 1617
Ciprofloxacin (CIP)5 μg1516 : 2021
Chloramphenicol (C)30 μg1213 : 1718
Streptomycin (STR)10 μg1112 : 1415
Gentamycin (CN)10 μg1213 : 1415
Erythromycin (E)15 μg1314 : 2223
Doxycycline (Do)30 μg1011 : 1314
Levofloxacin (LEV)5 μg1314 : 1617
Lincomycin (L)2 μg910 : 1415
Norfloxacin (NOR)10 μg1213 : 1617
Colistin (CT)10 μg1011 : 1314