A Field investigation of the effect of 5 mg PGF2α given intravenously to cycling beef cows and heifers

Authors

  • R. S. Ott College of Veterinary Medicine, University of Illinois, Urbana, Illinois 61801
  • T. L. Lock College of Veterinary Medicine, University of Illinois, Urbana, Illinois 61801
  • B. O. Brodie College of Veterinary Medicine, University of Illinois, Urbana, Illinois 61801
  • M. A. Memon College of Veterinary Medicine, University of Illinois, Urbana, Illinois 61801
  • M. E. Mansfield College of Veterinary Medicine, University of Illinois, Urbana, Illinois 61801

DOI:

https://doi.org/10.21423/bovine-vol1980no15p25

Keywords:

females, LH, Luteolysis, Oestrous cycle, prostaglandins, reproduction, beef cattle

Abstract

Prostaglandin F2α (PGF2α) has been proven to be an effective luteolytic agent in cattle when administered after day 5 of the cycle. While the recommended dose of PGF2α in cattle has been established as 25 mg IM, there have been field reports that a dose as low as 5 mg PGF2α IV was effective in obtaining luteolysis. It has been documented that 5 mg PGF2α IM was luteolytic in hysterectomized heifers and a dose of .5 mg PGF2α IV has caused estrus and evacuation of purulent material in cows with pyometra.

The purpose of this field trial was to determine the efficacy of 5 mg PGF2α IV in causing luteolysis and estrus in a group of cycling beef cows.

Cover image of the 15th Volume of the Bovine Practitioner: A photo of the two curved towers of Toronto City Hall as seen through a sculpture and immaculately manicured flowerbeds.

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Published

1980-11-01

Issue

No. 15 (1980 November)

Section

Articles

How to Cite

A Field investigation of the effect of 5 mg PGF2α given intravenously to cycling beef cows and heifers. (1980). The Bovine Practitioner, 1980(15), 25. https://doi.org/10.21423/bovine-vol1980no15p25