K. Macmillan
University of Alberta
16 Papers
14 Citations
K. Macmillan is an academic researcher from University of Alberta. The author has contributed to research in topics: Estrus Detection & Medicine. The author has an hindex of 6, co-authored 16 publications.
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Papers
Accuracy of a cow-side test for the diagnosis of hyperketonemia and hypoglycemia in lactating dairy cows.
TL;DR: The results indicate that the cow-side device is accurate for rapid measurement of blood BHBA and diagnosis of ketosis on farms but is not accurate for measurement of Blood β-hydroxybutyrate and glucose concentrations and diagnoses of hypoglycemia.
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Evaluation of a modified GnRH-based timed-AI protocol associated with estrus detection in beef heifers inseminated with sex-selected or conventional semen.
M.G. Colazo,P.R Whittaker,K. Macmillan,D. Bignell,G. Boender,R. de Carvalho Guimaraes,Reuben J. Mapletoft +6 more
TL;DR: Pregnancy per AI was greater in cyclic heifers, in those inseminated with conventional semen and in those exhibiting estrus before TAI, and the usefulness of an estrus detection (ED) aid could be used to increase the adoption of this technology in beef herds.
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Evaluation of infrared thermography compared to rectal temperature to identify illness in early postpartum dairy cows.
TL;DR: Infrared thermography was at least comparable to RT and some IRT variables performed better as a screening tests than RT, and future studies into the automation of IRT for surveillance of early postpartum diseases is warranted.
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Comparison of the effects of two shortened timed-AI protocols on pregnancy per AI in beef cattle
K. Macmillan,M. Gobikrushanth,Albina Sanz,D. Bignell,G. Boender,L. Macrae,Reuben J. Mapletoft,M.G. Colazo +7 more
TL;DR: In summary, the J-synch protocol resulted in greater P/AI than the modified 5-day Co- synch protocol in heifers and cows.
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Update on Multiple Ovulations in Dairy Cattle.
TL;DR: This review updates the causal mechanisms and risk factors for multiple ovulations (MOV) in cattle, which can lead to twin pregnancies, which negatively affects the health, production, and reproduction of cows.
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