2025/11/17 by Ellen Boyd, Erin Cuthbert, J.W. DICK +2 · 1 voice
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Salmonella and Campylobacter epidemiology #Food Safety and Hygiene #Listeria monocytogenes in Food Safety
paper · pdf · doi:10.3168/jdsc.2025-0884
openalex publication_date 2025/11/17 · openalex created_date 2025/11/17 · openalex updated_date 2026/07/31
A recent study found that 30% of all dairy farms in British Columbia, Canada were positive for Salmonella Dublin, which has prompted a need to determine how to properly manage and mitigate S. Dublin within the province. The overarching goal of this study is to use the components of a Danish S. Dublin risk scoring tool to perform a cross-sectional, exploratory study to evaluate whether the tool, or components therein, can differentiate between S . Dublin BTM positive vs. BTM negative British Columbia dairy farms. Seventy BC dairy producers completed the survey and were classified as positive or negative based off of bulk tank milk surveillance results. Overall, the components outlined in the modified Danish tool failed to differentiate herds that were positive or negative for S . Dublin on BTM, with only 2 risk factors being identified. Farms that reported housing more than one adult dairy cow in the maternity pen were 4 times more likely to be positive for S . Dublin on BTM than farms that only kept one adult in the maternity pen at a time. Future research should seek to determine if further modifications to the risk factor survey would be useful, especially the inclusion of questions on factors that target introduction of S . Dublin versus on-farm transmission of S . Dublin.