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

dc.contributor.advisorRajic, Andrijana
dc.contributor.advisorMcEwen, Scott
dc.contributor.authorBucher, Oliver
dc.date.accessioned2020-08-24T15:47:43Z
dc.date.available2020-08-24T15:47:43Z
dc.date.copyright2010
dc.degree.departmentDepartment of Population Medicineen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.description.abstractSystematic 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.en_US
dc.identifier.urihttps://hdl.handle.net/10214/20136
dc.language.isoen
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectChickensen_US
dc.subjectSalmonellaen_US
dc.subjectInterventionsen_US
dc.subjectQuantitative exposure assessmenten_US
dc.subjectProcessingen_US
dc.titleEvaluation of interventions for Salmonella in chickens using research synthesis and quantitative exposure assessmenten_US
dc.typeThesisen_US

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