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Abstract

Two long-term, CIDR-based estrus synchronization protocols were evaluated among Bos indicus-influenced and Bos taurus beef heifers. Treatments were evaluated on the basis of estrous response and pregnancy rate resulting from fixed-time artificial insemination (FTAI), and these outcomes were...

Author(s)
Thomas, J. M.; Locke, J. W. C.; Bishop, B. E.; Abel, J. M.; Ellersieck, M. R.; Yelich, J. V.; Poock, S. E.; Smith, M. F.; Patterson, D. J.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 92, pp 190-196
Abstract

A method for timed artificial insemination (AI) that is used for beef cows, beef heifers, and dairy heifers employs progesterone-releasing inserts, such as the controlled internal drug release (CIDR; Zoetis, New York, NY, USA) that are left in place for 14 days. The 14-day CIDR treatment is a...

Author(s)
Escalante, R. C.; Poock, S. E.; Lucy, M. C.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2013, 80, 8, pp 903-913