New Insights into Salmonella Detection in Poultry

Strategic Insights -

Research by the U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS) has shed new light on the detection of Salmonella in poultry. The study investigated alternative anatomical sampling locations for detecting Salmonella in preharvest turkeys, with surprising results. The findings suggest that the traditional method of sampling the cecum may not be the most effective way to detect Salmonella, and that other locations such as the cloaca, crop, vent feathers, and foot pad may yield higher recovery rates.

Key Takeaways:

  • The poultry cecum is not the most effective location for detecting Salmonella in poultry, with lower recovery rates compared to alternative locations.
  • The cloaca, crop, vent feathers, and foot pad are more effective locations for detecting Salmonella in preharvest turkeys.
  • Salmonella serotypes translocate differently within the bird and can be recovered at different anatomical locations.
  • The study used a cocktail of three Salmonella serotypes (S. Heidelberg, S. Reading, and S. Infantis) to challenge 36-day-old turkeys.
  • The study was conducted over a period of 12 days, with sampling on Day 0, 6, and 9 post-challenge.
  • The results suggest that a more comprehensive sampling strategy may be necessary to effectively detect Salmonella in poultry.

Statistics:

  • 36-day-old turkeys were used in the study, with 78 birds challenged with a cocktail of three Salmonella serotypes.
  • Sampling was conducted on Day 0, 6, and 9 post-challenge, with a total of 228 samples collected.
  • The recovery rate of Salmonella from the cloaca, crop, vent feathers, and foot pad samples was significantly higher than from cecal samples (P
  • The study found that Salmonella serotypes translocated differently, with S. Heidelberg recovered from the cloaca, crop, and foot pad, while S. Reading was recovered from the vent feathers and S. Infantis from the cecum.

Sources:

  • Recovery Of Salmonella From Alternative Anatomical Sites After an Oral Challenge With Three Different Salmonella Serotypes In Turkeys. Poultry Science, 2025;104(9).
  • Food Weekly News. September 4, 2025; p 119.
  • U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS), Southern Plains Agr Ctr, Food and Feed Safety Research Unit, College Stn, TX 77845, United States.