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Detection and Isolation of Campylobacter spp. from Raw Meat
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Distribution of Campylobacter genotypes on broilers during slaughter.

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Genotyping methods reveal Campylobacter contamination on chicken carcasses. Most genotypes found on carcasses originate from the same slaughter group or earlier, indicating survival through processing.

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Area of Science:

  • Food safety
  • Microbiology
  • Veterinary science

Background:

  • Campylobacter is a leading cause of bacterial gastroenteritis globally.
  • Effective genotyping is crucial for understanding Campylobacter transmission dynamics in poultry.
  • Poultry carcasses are a significant reservoir for Campylobacter transmission to humans.

Purpose of the Study:

  • To investigate the frequency and diversity of Campylobacter genotypes on chicken carcasses post-slaughter.
  • To determine the origin and transmission routes of Campylobacter genotypes in a poultry processing environment.
  • To assess the survival of Campylobacter genotypes during poultry processing.

Main Methods:

  • Macrorestriction profiling was used to subtype Campylobacter isolates.
  • Isolates were recovered from chicken carcasses (post-chilling), neck skin, and cloacal swabs.
  • Analysis included isolates recovered with and without enrichment from carcasses.

Main Results:

  • An average of 1.5 Campylobacter genotypes were found per carcass.
  • Carcass genotypes largely matched cloacal samples from the same or preceding slaughter groups.
  • Most cloacal genotypes were detected on corresponding carcasses, indicating survival through processing.

Conclusions:

  • Chicken carcasses are typically contaminated with one or two distinct Campylobacter genotypes.
  • Campylobacter transmission can occur between slaughter groups, highlighting the need for stringent hygiene protocols.
  • Genotyping provides valuable insights into the sources and spread of Campylobacter in poultry production.