Antimicrobial Sensitivity of Campylobacter jejuni Poultry Isolates from the Republic of Bulgaria

A total of 110 caecal samples were collected from broiler chickens originating from 6 small poultry farms in Bulgaria during the first half of 2009, and (45) Campylobacter jejuni strains were isolated. Twenty four (53.3%) of the C. jejuni isolates were determined as resistant to several antibiotics. The highest percentage of resistance was observed against (tetracycline) - 22.2%, (enrofloxacin) - 13.4% and (ampicillin) - 11.1%. Two strains (4.4%) were resistant to erythromycin. The distribution of isolates on the basis of Minimal Inhibition Concentration revealed the highest value of 64 μg/ml to tetracycline in one of the strains. Four isolates resistant against ampicillin were with MIC of 32 μg/ml, and another one – with MIC 16 μg/ml.