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Prevalence and risk factors for Salmonella and Campylobacter spp. carcass contamination in broiler chickens slaughtered in Quebec, Canada
- Source :
- Journal of food protection. 70(8)
- Publication Year :
- 2007
-
Abstract
- An observational study was conducted to estimate prevalence and risk factors for Salmonella and Campylobacter spp. carcass contamination in broiler chickens. Eighty-two lots were sampled in four slaughterhouses located in the province of Québec, Canada, over a 10-month period. Carcass contamination was evaluated by the carcass rinse technique for about 30 birds per lot. Exposure to potential risk factors was evaluated based on data from questionnaires, meteorology, and cecal cultures. Multivariable binomial negative regression models were used for risk factor analysis at the lot level. The prevalence of Salmonella-positive carcasses was 21.2% (95% confidence interval: 15.7 to 26.7%). Significant risk factors (P0.05) associated with a higher proportion of positive carcasses within lots were Salmonella-positive cecal culture, low rainfall during transportation to the slaughterhouse, temperature ofor = 0 degree C during transportation to the slaughterhouse, and aor = 4-h waiting period in shipping crates before slaughtering. The prevalence of Campylobacter-positive carcasses was 35.8% (95% confidence interval: 27.1 to 44.5%). Lots containing birds with Campylobacter-positive cecal culture results, lots of birds that were slaughtered at the end of the week, and lots with at least 20% of birds with digestive contents detected in the jejunum at time of slaughtering had a significantly higher proportion (P0.05) of contaminated carcasses. These results support the importance of preharvest control measures implemented during rearing to reduce contamination of the final product. Weather during transportation to slaughter and the day of the week that birds were slaughtered also were associated with carcass contamination; further studies are needed to determine the underlying mechanisms by which these factors influence carcass contamination.
- Subjects :
- Salmonella
animal diseases
Colony Count, Microbial
Food Contamination
Biology
medicine.disease_cause
Microbiology
Risk Assessment
Animal science
medicine
Prevalence
Food microbiology
Animals
Humans
Risk factor
Weather
Campylobacter
Broiler
Quebec
food and beverages
Animal husbandry
Contamination
Consumer Product Safety
Food Microbiology
Chickens
Abattoirs
Food Science
Food contaminant
Subjects
Details
- ISSN :
- 0362028X
- Volume :
- 70
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- Journal of food protection
- Accession number :
- edsair.doi.dedup.....88d6f2366c2715b35522154164f61163