Breeding programs for dairy herds using prostaglandin F2α products to save labor

Field trial evaluation of reproductive performance

Authors

  • B. Seguin Department of Clinical and Population Sciences, College of Veterinary Medicine, University of Minnesota, St Paul, MN 55108
  • H. W. Momont Department of Clinical and Population Sciences, College of Veterinary Medicine, University of Minnesota, St Paul, MN 55108
  • V. L. King Department of Clinical and Population Sciences, College of Veterinary Medicine, University of Minnesota, St Paul, MN 55108
  • D. G. Johnson West Central Experiment Station, College of Agricultural, Food, & Environmental Sciences, University of Minnesota, Morris, MN 56267
  • G. Marx North West Experiment Station, College of Agricultural, Food, & Environmental Sciences, University of Minnesota, Crookston, MN 56716
  • D. E. Otterby Department of Animal Science, College of Agricultural, Food, & Environmental Sciences, University of Minnesota, St. Paul, MN 55108

DOI:

https://doi.org/10.21423/bovine-vol33no2p106-112

Abstract

Three reproductive management systems designed to use prostaglandin F2α (PGF) to save labor needed for estrous detection and artificial insemination (AI) were compared to conventional dairy herd reproductive management to evaluate their potential to maintain herd reproductive performance. The four experimental groups were: (1) CONTROL = daily estrous detection for AI with no PGF intervention, (2) Appointment (APPT) AI = double PGF injection at a 12-day interval followed by single appointment AI at 72 hrs for first AI, with repeat AI based on estrous detection, (3) 7-DAY = weekly (Monday) PGF injection for all cows ready for first or repeat AI with AI based on estrous detection which occurred only four days (Wednesday through Saturday) of each week, and (4) 21-DAY = repeating 21-day blocks of 13 days of AI based on estrous detection with PGF given on day 8 to cows yet to be inseminated and 8 days with no estrous detection or AI. All cows in all groups became eligible for breeding after a voluntary waiting period (VWP) of 54 days.

Cover image of Volume 33, No.2 of the Bovine Practitioner: a photo of the Nashville skyline at dusk.

Downloads

Published

1999-05-01

Issue

Vol. 33, No. 2 (1999 May)

Section

Articles

How to Cite

Breeding programs for dairy herds using prostaglandin F2α products to save labor: Field trial evaluation of reproductive performance. (1999). The Bovine Practitioner, 33(2), 106-112. https://doi.org/10.21423/bovine-vol33no2p106-112