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An Evaluation of Biosecurity Practices on Southern Ontario Swine Farms, and its Application to Risk-Based Surveillance Approaches

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dc.contributor.advisor Poljak, Zvonimir
dc.contributor.author Bottoms, Katherine
dc.date.accessioned 2012-05-11T16:42:01Z
dc.date.available 2012-05-11T16:42:01Z
dc.date.copyright 2012-05
dc.date.created 2012-04-30
dc.date.issued 2012-05-11
dc.identifier.uri http://hdl.handle.net/10214/3617
dc.description.abstract This thesis is an investigation of external biosecurity and its application to risk-based surveillance approaches in the southern Ontario swine industry. In each of two datasets, the best number of groups to describe biosecurity practices was identified, resulting in two groups with high biosecurity standards and one group with low biosecurity standards. Multinomial logistic regression models identified herd density, herd size, and herd type among significant predictors of biosecurity group membership. A map of southern Ontario that can be used as a tool in the risk-based surveillance of contagious swine diseases was developed using geographic information about swine density, and the distribution of herds belonging to the high biosecurity groups. Finally, multiple correspondence analysis examined how individual biosecurity practices form strategies on sow farms. Some practices that are generally considered high-risk were closely associated with other practices that mitigate the risk, suggesting that evaluation of the overall strategy is essential for complete assessment of biosecurity. en_US
dc.description.sponsorship The Ontario Ministry of Agriculture, Food and Rural Affairs (under the Emergency Management research theme); Ontario Pork; the Ontario Pork Industry Council's Swine Health Advisory Board; the Natural Sciences and Engineering Research Council of Canada; en_US
dc.language.iso en en_US
dc.subject Swine en_US
dc.subject Biosecurity en_US
dc.subject Risk-based surveillance en_US
dc.subject Cluster analysis en_US
dc.subject Class analysis en_US
dc.subject Multiple correspondence analysis en_US
dc.title An Evaluation of Biosecurity Practices on Southern Ontario Swine Farms, and its Application to Risk-Based Surveillance Approaches en_US
dc.type Thesis en_US
dc.degree.programme Population Medicine en_US
dc.degree.name Master of Science en_US
dc.degree.department Population Medicine en_US
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