Factors affecting fecal shedding of escherichia coli 0157:H7 in cattle

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dc.contributor.authorHallewell, Jennyka
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorThomas, James E.
dc.contributor.supervisorMcAllister, Tim A.
dc.date.accessioned2014-10-30T22:05:41Z
dc.date.available2014-10-30T22:05:41Z
dc.date.issued2014
dc.degree.levelPh.Den_US
dc.descriptionxiii, 104 leaves : illl. ; 29 cmen_US
dc.description.abstractCattle are reservoirs of E. coli O157:H7 and contamination of carcasses during slaughter transfer this potentially deadly pathogen into the human food chain. The goal of this study was to assess: 1) the effect of feeding cattle corn or wheat DDGS, a by-product of the bioethanol industry on fecal shedding or persistence of E. coli O157:H7 in cattle; 2) the effect of endemic bacteriophages on fecal shedding of E. coli O157:H7 in cattle. Results from this study suggest addition of DDGS in finishing diets of cattle do not affect the fecal shedding or persistence of E. coli O157:H7. Three types of endemic phages were identified which may impact levels of shedding of E. coli O157:H7 in cattle. Improved understanding of factors which contribute to shedding of E. coli O157:H7 and the natural microbiota of individual cattle will improve upon existing systems to reduce E. coli O157:H7 in meat.en_US
dc.identifier.urihttps://hdl.handle.net/10133/3599
dc.language.isoen_CAen_US
dc.proquest.subject0476en_US
dc.proquest.subject0475en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Biological Sciences, 2014en_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectE.coli 0157:H7en_US
dc.subjectFecal sheddingen_US
dc.subjectCattleen_US
dc.subjectFinishing dietsen_US
dc.subjectEndemic bacteriophagesen_US
dc.subjectDissertations, Academicen_US
dc.titleFactors affecting fecal shedding of escherichia coli 0157:H7 in cattleen_US
dc.typeThesisen_US
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