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  • Title: Prevalence, quantitative load, and antimicrobial resistance of Campylobacter spp. from broiler ceca and broiler skin samples in Thailand.
    Author: Chokboonmongkol C, Patchanee P, Gölz G, Zessin KH, Alter T.
    Journal: Poult Sci; 2013 Feb; 92(2):462-7. PubMed ID: 23300314.
    Abstract:
    This study was conducted to determine the prevalence of Campylobacter spp. in broiler flocks by testing cecal contents at slaughter and to detect and quantify Campylobacter on broiler carcass skin samples of the corresponding slaughter batches, to determine antimicrobial resistance patterns of the Campylobacter isolates, and to genotype selected Campylobacter jejuni isolates using multilocus sequence typing analysis. Ninety-eight broiler flocks were included in the study. Intact ceca were randomly taken at the time of evisceration throughout a slaughter batch to detect Campylobacter spp. at the broiler flock level and one whole carcass per slaughter batch was taken for the detection of Campylobacter spp. on broiler skin. The prevalences of Campylobacter spp. in broiler ceca and broiler skin samples were 11.2% (11/98) and 51% (50/98), respectively. Even though most Campylobacter-positive broiler skin samples were contaminated with only up to 230 most probable number per gram, a substantial share (13.3%) showed very high Campylobacter numbers on the broiler skin samples (most probable number = ∞; lower confidence limit T(0) 580/g). From 32 C. jejuni and Campylobacter coli isolates tested, the highest antimicrobial resistance rates were found for ciprofloxacin (81.2%), followed by tetracycline (40.6%), ampicillin (31.2%), and erythromycin (9.4%). All tested strains were sensitive to gentamicin. By multilocus sequence typing analysis, a total of 9 different sequence types were identified among 16 C. jejuni isolates. Campylobacter jejuni isolated from cecal content and carcass skin of the same farm or slaughter batch showed corresponding allelic profiles. Our data suggest that intense cross-contamination during the slaughter process led to a strong increase of Campylobacter prevalence on broiler skin compared with the prevalence in broiler ceca. To reduce Campylobacter prevalences on broiler skin, on-farm biosecurity measures need to be accompanied by control measures at the slaughterhouse to reduce fecal contamination of broiler skin and to minimize cross-contamination.
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