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Field Evaluation of Milk Progesterone Kits for Determination of Pregnancy in Dairy Cows

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dc.contributor.author Fisher, G. R.
dc.contributor.author Tedmer, D. A.
dc.contributor.author Teynolds, L. P.
dc.contributor.author Kirsch, J. D.
dc.rights North Dakota State University en
dc.title Field Evaluation of Milk Progesterone Kits for Determination of Pregnancy in Dairy Cows en
dc.type Article en
dc.source North Dakota Farm Research: Vol. 46, No. 04, pgs. 31-32 en
dc.description The concentration of progesterone, a hormone, in milk can help determine if a cow is pregnant. Tests could take 2 hours to several days to determine progesterone levels. This article covers a study where three commercially available kits results were compared to the standard RIA analysis of actual progesterone concentrations. Results showed that milk progesterone concentrations for those cows not pregnant were less than those of pregnant cows. Plasma progesterone levels were less in those cows that were not pregnant. ELISA kits were quite accurate in the diagnosing of pregnancy status on 21 days after breeding. This was in agreement with the standard qualitative RIA procedures. The ELISA test can be useful in checking the accuracy of estrus detection. Factors affecting the accuracy of the tests were briefly discussed.
dc.date.accessioned 2009-10-01T14:10:45Z
dc.date.available 2009-10-01T14:10:45Z
dc.date.issued 2009-10-01T14:10:45Z
dc.identifier.uri http://hdl.handle.net/10365/6279
dc.date 1989 en

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