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Journal of Dairy Science Vol. 73 No. 10 2826-2831
© 1990 by American Dairy Science Association ®
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Economic Evaluation of Pregnancy Diagnosis in Dairy Cattle: A Decision Analysis Approach

P. A. Oltenacu 1, J. D. Ferguson 1, and A. J. Lednor 1

1 Department of Animal Science, Cornell University, Ithaca, NY 14853-4801

Cost-benefit evaluations of several pregnancy diagnosis schemes were performed. The strategy using on-farm milk progesterone test on d 19 after service, followed by treatment of nonpregnant cows with prostaglandin, was the most profitable returning $10.50 per cow above the cost of the intervention. An increase in efficiency of detection of estrus of ge20% among cows diagnosed nonpregnant and an error rate in pregnancy diagnosis of le3% were needed to ensure profitability. Pregnancy diagnosis by uterine palpation per rectum on d 35 after service, combined with the use of pressure-sensitive mounting devices on nonpregnant cows was the second most profitable strategy and returned $5.10 per cow. An increase in efficiency of detection of estrus of ge20% was required to ensure profitability. Embryonic mortality was also critical and an increase from a baseline value of 10% to 12%, as a result of early uterine palpation, made this scheme unprofitable ($–4.80 per cow). Pregnancy diagnosis by uterine palpation per rectum at 50 or 65 d was less profitable, with a return of $2.50 and $.10 per cow, respectively.

Key Words: pregnancy diagnosis • progesterone • economics

Submitted on January 8, 1990
Accepted on May 22, 1990




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