Abstract
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Highlights
Antimicrobial resistance has emerged among Campylobacter spp. mainly due to use of antimicrobial agents in animal feed
In 2004, 30 samples of pig origin tested positive to Campylobacter spp., from which 4 and 26 samples were identified as C. jejuni and C. coli resppectively
The resistance coincided with initiation of the administration of the fluoroquinolone antibiotic, enrofloxacin, to animal feed e.g. broiler chicken feed
Summary
Antimicrobial resistance has emerged among Campylobacter spp. mainly due to use of antimicrobial agents in animal feed. Evaluation of results was carried out using agar dilution method (NCCLS M11-A6) to test the sample resistance against ampicillin, tetracycline, chloramphenicol, erythromycin, gentamicin, ciprofloxacin and nalidixic acid. The C. jejuni strain from pigs mainly showed a high resistance to tetracycline (39.13%) and erythromycin (34.78%). C. coli isolates from pigs showed simular results to C. jejuni, such as resistance to tetracycline (60.71%) and erythromycin (56.84%). It was found that C. jejuni in pigs had a high resistance to ciprofloxacin (52.63%) and nalidixic acid (34.74%). C. jejuni isolates from chicken samples had the highest resistance to ciprofloxacin (45.21%) and ampicillin (27.40%), and a low resistance to erythromycin (13.70%). C. coli strains found in chickens showed high resistance to nalidixic acid (60.71%) and ciprofloxacin (46.43%). Campylobacter spp. in pigs is relatively frequent, C. coli is the most commonly isolated strain.
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