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Pergola, S.; Franciosini, M.P.; Comitini, F.; Ciani, M.; De Luca, S.; Bellucci, S.; Menchetti, L.; Casagrande Proietti, P.
Journal of applied microbiology, 20/May , Volume: 122, Issue: 5Journal Article
Aims Genetic diversity and antimicrobial resistance of Campylobacter coli and Campylobacter jejuni were investigated along the broiler chicken production chain in central Italy. Methods and Results Campylobacter sp. isolated from cloacal swabs in farms (n = 116) and from the neck skin of chilled and eviscerated carcasses at slaughter (n = 24) were identified as C. coli (n = 99) and C. jejuni (n = 41) by multiplex PCR. Characterization by single amplified fragment length polymorphism (s‐AFLP) revealed a specific genotype of Campylobacter for each farm. Minimal inhibitory concentration showed high prevalence of fluoroquinolones (70%), tetracycline (70%) and erythromycin (30%) resistance among C. coli isolates. Campylobacter jejuni isolates showed lower prevalence of fluoroquinolone (39%) and tetracycline (10%) resistance, and all isolates were susceptible to erythromycin. The S‐AFLP types of the C. coli and C. jejuni isolates were associated with their antimicrobial resistance profiles (P < 0·001). Conclusions The genetic diversity detected in Campylobacter isolates suggested that a specific genotype was harboured in each farm. A considerable number of C. coli isolates were resistant to erythromycin. Significance and Impact of the Study Campylobacter coli was detected more frequently than C. jejuni in contrast to common findings for poultry. The high prevalence of 30% resistance to erythromycin in C. coli strains isolated from poultry is worrisome, as this is the first antibiotic of choice to treat human campylobacteriosis.
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