Utilizing an Oral Progestogen With or Without Prostaglandin F₂α to Synchronize Estrus in Beef Heifers with Natural Service or Artifical Insemination Under Field Conditions

Authors

  • D. J. Patterson Department of Animal Sciences, University of Kentucky, Lexington
  • E. D. Miksch Department of Veterinary Sciences, University of Kentucky Research and Education Center, Princeton

DOI:

https://doi.org/10.21423/aabppro19926568

Keywords:

progestogen, prostaglandin, luteal development, estrous cycle

Abstract

The theory behind combined progestogen-prostaglandin treatment was that animals beginning treatments with progestogens early in their estrous cycles had normal luteal development, and estrus occurred after administration of prostaglandin.3 When treatment with a progestogen began late in the estrous cycle, the corpus luteum regressed spontaneously during treatment, and females were held out of estrus until the source of the progestogen was removed. In these cases, the injection of PGF was not needed, even though it was administered to all animals.

Cover image of the Third Volume of the 25th Conference Proceedings: An earl-morning photo of farmland. A small farm is nestled among rolling hills, fields stretching across a curving road that disappears between dark green trees. The barn is a cheery red color with a tin roof. Beneath the photo is the a statement of the conference's theme in white italics: Challenges of the Bovine Industry in the Twenty-First Century. Deep red background.

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Published

1992-08-31

Issue

1992: Volume 3

Section

Genetics and Theriogenology

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