Evaluation of interventions for Salmonella in chickens using research synthesis and quantitative exposure assessment

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Bucher, Oliver
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University of Guelph

Systematic review-meta-analysis (SR-MA) was used to determine effectiveness estimates against 'Salmonella' concentration and frequency for different on-farm and processing treatments during broiler production. Results indicated that chilling may reduce 'Salmonella' concentration and frequency on broiler carcasses, but significant heterogeneity (p<0.1; I2>25%) precluded reporting pooled effectiveness estimates. These data were applied with those from other independently conducted SR-MAs and a scoping study (ScS) to generate inputs for a quantitative exposure assessment (QEA). The effectiveness of 2 individual farm and 6 processing interventions and a package of multiple interventions were compared within the Ontario context. A combination of farm and processing interventions pr04uced the largest reductions in 'Salmonella' concentration (99.87%) and prevalence (87.78%) relative to the baseline scenario. The ScS and SR-MAs provided a transparent and robust framework for selecting, evaluating and generating inputs for QEAs, however low methodological soundness and reporting of primary research prevented the full realization of their benefits.

Chickens, Salmonella, Interventions, Quantitative exposure assessment, Processing