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Detection and Isolation of Campylobacter spp. from Raw Meat
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Quantification of thermophilic Campylobacter spp. in broilers during meat processing.

Günter Klein1, Felix Reich, Lutz Beckmann

  • 1Institute for Food Quality and Food Safety, University of Veterinary Medicine, Bischofsholer Damm 15, 30173 Hanover, Germany. guenter.klein@tiho-hannover.de

Antonie Van Leeuwenhoek
|March 21, 2007
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Summary

Campylobacter bacteria are frequently found in poultry processing. This study tracked Campylobacter contamination from cloacal swabs to carcasses, revealing its prevalence throughout poultry production.

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Area of Science:

  • Food safety
  • Microbiology
  • Veterinary public health

Background:

  • Campylobacter spp. causes widespread gastrointestinal illness in humans.
  • Poultry meat is a significant source of human campylobacteriosis outbreaks.
  • Understanding contamination sources in poultry processing is crucial for public health.

Purpose of the Study:

  • To estimate Campylobacter prevalence at various poultry processing stages.
  • To quantify bacterial loads in different samples.
  • To investigate strain diversity and transmission during processing.

Main Methods:

  • Sampling at multiple steps in a German poultry slaughterhouse.
  • Quantification of Campylobacter using colony-forming units (cfu).
  • Molecular subtyping of isolates via pulsed-field gel electrophoresis (PFGE) with SmaI and KpnI enzymes.

Main Results:

  • 51.5% of 99 samples tested positive for Campylobacter.
  • Bacterial counts varied significantly, from log(10) 6.5 cfu/sample on carcasses to log 3.6 cfu/ml in scalding water.
  • PFGE revealed diverse Campylobacter strains, with patterns from cloacal swabs found on carcasses post-processing.

Conclusions:

  • Campylobacter contamination is prevalent throughout poultry slaughter and processing.
  • Molecular evidence suggests transmission from initial contamination points (cloacal swabs) to final products (carcasses).
  • Effective control measures during poultry processing are essential to reduce human exposure to Campylobacter.