Prevalence, Risk Factors and Treatment of Postpartum Anestrus in Dairy Cattle

Authors

  • R. B. Walsh Department of Population Medicine, University of Guelph, Guelph, Ontario Canada N1G 2W1
  • J. S. Walton Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario Canada N1G 2W1
  • K. E. Leslie Department of Population Medicine, University of Guelph, Guelph, Ontario Canada N1G 2W1
  • S. J. LeBlanc Department of Population Medicine, University of Guelph, Guelph, Ontario Canada N1G 2W1

DOI:

https://doi.org/10.21423/aabppro20054861

Keywords:

Reproduction, economic goals, management aids, estrus detection devices, ovulation control program, anestrus, risk factors, progesterone releasing intravaginal device, conception risk

Abstract

Reproduction remains a significant limiting factor to the achievement of economic goals on dairy farms. Dairy producers are making increasing use of management aids, such as estrus detection devices and estrus or ovulation control programs, to mitigate the impact of poor heat detection. While such management aids are useful, their success is dependent on the rate that animals return to a predictable estrus cycle. The objectives were: 1) to determine the prevalence of anestrus in Ontario dairy herds, 2) to evaluate herd and cow level risk factors for anestrus and 3) to investigate the impact of a progesterone releasing intravaginal device (PRID) on days to first service, first service conception risk and days from calving to conception in animals at risk of anestrus.

Cover image of the 38th Conference Proceedings: A cow nuzzles her newborn calf in a stall with straw bedding. Both are content. Yellow background.

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Published

2005-09-24

Issue

2005

Section

Research Summaries 3

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