The Impact of Heat Waves in Rural Southern Ontario on Dairy Cow Mortality and Human Emergency Room Visits

dc.contributor.advisorBerke, Olaf
dc.contributor.authorBishop, Katherine E.
dc.date.accessioned2014-07-11T20:55:34Z
dc.date.available2014-07-11T20:55:34Z
dc.date.copyright2014-06
dc.date.created2014-06-20
dc.date.issued2014-07-11
dc.degree.departmentDepartment of Population Medicineen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.degree.programmePopulation Medicineen_US
dc.description.abstractIn Southern Ontario, climate change caused an increase in frequency and intensity of heat waves which can cause heat stress. A heat wave is a 3-day period with temperatures exceeding 32°C daily. Heat stress is a physiological response to environmental heat which can result in discomfort, morbidity and mortality. The level of discomfort caused by heat stress can be estimated by measures known as Heat Stress Indices (HSIs). Maps visualizing the distribution of heat stress in Southern Ontario were produced by geostatistical kriging. Higher levels of heat stress during heat waves were predicted in the south, particularly urrounding major metropolitan areas. Subsequent research utilized these maps to predict the HSI at point locations. Using Quasilikelihood Poisson regression, it was estimated that a 1.03 (p<0.001) times higher on-farm dairy cow mortality rate occurs for every one unit increase in HSI. Using Poisson regression, it was estimated that rural hospitals have 1.11 (p<0.001) times higher admissions during a heat wave than ontrol period. These findings will improve policy for heat wave reparedness in rural Southern Ontario.en_US
dc.description.sponsorshipOntario Veterinary College Graduate Student Scholarship
dc.identifier.urihttp://hdl.handle.net/10214/8213
dc.language.isoenen_US
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectHeat stressen_US
dc.subjectHeat waveen_US
dc.subjectKrigingen_US
dc.subjectSouthern Ontarioen_US
dc.subjectDairy cowsen_US
dc.subjectPublic Healthen_US
dc.subjectEmergency Roomen_US
dc.subjectRuralen_US
dc.titleThe Impact of Heat Waves in Rural Southern Ontario on Dairy Cow Mortality and Human Emergency Room Visitsen_US
dc.typeThesisen_US

Files

Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Bishop_Katherine_201406_MSc.pdf
Size:
3.97 MB
Format:
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description: