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Assessment of a Test for Pregnancy-Associated Glycoproteins in Milk from Dairy Cows

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dc.contributor.advisor Kelton, David
dc.contributor.author Wynands, Erin
dc.date.accessioned 2015-12-22T20:07:39Z
dc.date.available 2015-12-22T20:07:39Z
dc.date.copyright 2015
dc.date.created 2015-10-08
dc.date.issued 2015-12-22
dc.identifier.uri http://hdl.handle.net/10214/9408
dc.description.abstract The first objective of this thesis was to evaluate the effect of storage temperature and duration on milk pregnancy-associated glycoprotein (PAG) ELISA results. PAG level was influenced by storage duration and condition. The change in PAG level was small and the misclassification of samples was minimal. The second objective was to describe the relationship between PAG at various stages of gestation and the likelihood of successful calving. Logistic regression models were constructed for the prediction of successful calving. In cows that tested pregnant > 25 and ≤ 45 days in gestation (DIG), there was a positive curvilinear relationship between PAG level and odds of calving. In cows > 45 and ≤ 75 DIG at the time of testing, PAG level was negatively associated with the odds of calving, and for cows tested > 75 and ≤ 290 DIG PAG level was positively associated with odds of calving. en_US
dc.language.iso en en_US
dc.title Assessment of a Test for Pregnancy-Associated Glycoproteins in Milk from Dairy Cows 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 Department of Population Medicine en_US
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