Abstract
Phenotypic antimicrobial resistance testing of 160 Campylobacter jejuni isolates from broiler caeca and neck skin samples collected at key stages during processing from 32 batches was conducted to: (i) determine the prevalence of antimicrobial resistance in C. jejuni isolates (ii) investigate if C. jejuni strains with particular resistance profiles were more frequently recovered at the end of processing, (iii) to establish if multiple strains with different resistance profiles were present within individual batches of broilers and (iv) to determine the virulence profiles of isolates. C. jejuni isolates were tested for resistance to erythromycin (ERY), ciprofloxacin (CIP), tetracycline (TET), gentamicin (GEN), nalidixic acid (NAL) and streptomycin (STR) using a broth dilution phenotypic method. Resistance to TET was most prevalent (46%), followed by resistance to CIP and NAL (29%). All isolates were susceptible to ERY and GEN, while resistance to STR was low (2%).
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