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Salmonella spp. at Slaughter Lacks Ability to Predict Contamination on Farm
International Conference on the Epidemiology and Control of Biological, Chemical and Physical Hazards in Pigs and Pork
  • B. Wang, Iowa State University
  • James D. McKean, Iowa State University
  • Annette M. O'Connor, Iowa State University
Publication Date
The aim of this study was to evaluate the ability of Salmonella contamination in lymph nodes at slaughter to represent the Salmonella shedding on farm. 20 Iowa herds were selected based on cooperation and visited from September 2006 to February 2009. 11 of the 20 herds had multiple visits. At each farm visit, 30 individual fecal samples were collected. At slaughter, 30 mesenteric and 30 sub-iliac lymph nodes were collected. The fecal samples and sub-iliac lymph nodes were able to match on animal level by tattooing pigs on farms. Samples were tested Salmonella spp. by conventional microbiological methods and serotyping. Culture prevalence from farm feces over all the farms was 6%, ranging from 0 to 40% on the farm level and from 0 to 47% on the visit level.
Book Title
8th International Symposium Epidemiology and Control of Foodborne Pathogens in Pork
File Format
Citation Information
B. Wang, James D. McKean and Annette M. O'Connor. "Salmonella spp. at Slaughter Lacks Ability to Predict Contamination on Farm" (2009)
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