Prevalence and Subtype Characterization of Campylobacter in Ceca of Commercial Broiler Chickens at Processing - A 452 Flock, Seven-year Survey.

Autor:	Berrang ME; USDA-Agricultural Research Service, U.S. National Poultry Research Center, Poultry Microbiological Safety and Processing Research Unit, 950 College Station Rd., Athens, GA 30605, USA., McMillan EA; USDA-Agricultural Research Service, U.S. National Poultry Research Center, Poultry Microbiological Safety and Processing Research Unit, 950 College Station Rd., Athens, GA 30605, USA., Knapp SW; USDA-Agricultural Research Service, U.S. National Poultry Research Center, Poultry Microbiological Safety and Processing Research Unit, 950 College Station Rd., Athens, GA 30605, USA., Meinersmann RJ; USDA-Agricultural Research Service, U.S. National Poultry Research Center, Poultry Microbiological Safety and Processing Research Unit, 950 College Station Rd., Athens, GA 30605, USA. Electronic address: rick.meinersmann@usda.gov.
Jazyk:	angličtina
Zdroj:	Journal of food protection [J Food Prot] 2023 Nov; Vol. 86 (11), pp. 100170. Date of Electronic Publication: 2023 Sep 28.
DOI:	10.1016/j.jfp.2023.100170
Abstrakt:	Human Campylobacter infections have been associated with chicken and other poultry meat products. Environmental conditions such as temperature and season can affect Campylobacter recoverability from chicken meat products. In the presented study, we sought to investigate the relationship between ambient weather conditions and the isolation of Campylobacter from chicken flocks, as well as the subtype of these isolates. Campylobacter was isolated from the ceca of broilers collected in a commercial processing facility over 7 years, representing 452 flocks. Isolates were subjected to whole-genome sequencing and subtyping by multilocus sequence typing (MLST). Approximately 60% (269/452) of flocks sampled were positive for Campylobacter. There was no significant effect on the presence of detectable Campylobacter by month, season, temperature, or rainfall during grow-out or transportation. Sixty-eight different STs were detected; 45 C. jejuni and 23 C. coli. Diversity as measured by Shannon's diversity index was higher in the spring and fall than in mid-winter and summer. We concluded that in the warm temperate climate of the Southeastern U.S., seasonality does not affect the rate of Campylobacter isolation from broilers, but the diversity of isolates was higher in the milder spring and fall seasons. Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (Published by Elsevier Inc.)
Databáze:	MEDLINE
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