Influences on Early Fetal Loss in Dairy Cattle

Authors

  • Dale A. Moore School of Veterinary Medicine, University of California, Davis 95616
  • Michael W. Overton School of Veterinary Medicine, University of California, Davis 95616
  • Marla L. Truscott School of Veterinary Medicine, University of California, Davis 95616
  • Ricardo Chebel School of Veterinary Medicine, University of California, Davis 95616
  • Robert H. BonDurant School of Veterinary Medicine, University of California, Davis 95616

DOI:

https://doi.org/10.21423/aabppro20035297

Keywords:

repeat breeding, fertilization rate, early fetal loss, artificial insemination

Abstract

Early fetal loss in dairy cattle is a major factor contributing to repeat breeding. If the average fertilization rate in cattle is 85-95% and the incidence of repeat breeders is 56-72% of the herd, then embryonic or early fetal loss (EFL) accounts for 15-25% wastage. It was the purpose of this project to evaluate the effects that changes in body condition score (BCS) and breeding a potentially pregnant cow have on EFL during two periods: between 24-28 days after artificial insemination (AI), and between 28-42 days after AI.

Cover image of the 36th Conference Proceedings: Holstein cows standing in a row at a fence. One cow has put her head through the fence and is curiously inspecting a pile of hay. Yellow background.

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Published

2003-09-18

Issue

2003

Section

Research Summaries - Dairy I

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