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Occurrence of Salmonella, Campylobacter, Clostridium and Enterobacteriaceae in raw meat-based diets for dogs
  1. Josefin Hellgren1,
  2. Lovisa Staaf Hästö1,
  3. Camilla Wikström2,
  4. Lise-Lotte Fernström1 and
  5. Ingrid Hansson1
  1. 1 Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
  2. 2 Department of Microbiology, National Veterinary Institute, Uppsala, Sweden
  1. E-mail for correspondence; ingrid.hansson{at}


The practice of feeding raw meat-based diets (RMBD) to dogs has increased in popularity in recent years. However, RMBD are based on offal that has not undergone any type of treatment to reduce the microbial content, so there is a risk of potential pathogenic microorganisms being present. Frozen samples from 60 RMBD packs produced by 10 different manufacturers were analysed for their content of bacteria belonging to the family Enterobacteriaceae, for Clostridium perfringens and for the presence of Salmonella and Campylobacter. Enterobacteriaceae were detected in all 60 samples and in 31 samples exceeded a level of 5000 bacteria/g, which is the threshold for satisfactory microbial hygiene according to EU regulations. In two samples, the amount of C. perfringens exceeded 5000 bacteria/g, which is the maximum level of anaerobic bacteria permitted by Swedish national guidelines. Salmonella species were found in four (7 per cent) and Campylobacter species in three (5 per cent) samples. These results show that it is critical to maintain good hygiene when storing, handling and feeding RMBD, in order to limit the potential health risks to animals and humans, especially young and immunocompromised individuals.

  • bacteriology
  • dogs
  • nutrition
  • zoonoses
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  • Contributors All authors contributed substantially to interpretation of data, drafting the final manuscript and critical revision for important intellectual content. All authors have agreed this final submitted version, which fulfils all three of the ICMJE guidelines for authorship.

  • Funding This research was funded by the C August Carlsson and Elsa Paulsson Foundation at the Faculty of Veterinary Medicine and Animal Sciences, Swedish University of Agricultural Sciences.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Correction notice This article has been corrected since it was published Online First. A percentage value was previously incorrect.

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