Comparison of Pregnancy Rate in Angus-cross Beef Cows following Insemination with Frozen Thawed or Fresh Extended Semen

Authors

  • A. M. Bucher Department of Large Animal Clinical Sciences, Virginia Tech, Blacksburg, VA
  • R. K. Kasimanickam Department of Large Animal Clinical Sciences, Virginia Tech, Blacksburg, VA
  • J. B. Hall Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA
  • J. M. DeJarnette Select Sires Inc., Plain City, OH
  • W. D. Whittier Department of Large Animal Clinical Sciences, Virginia Tech, Blacksburg, VA

DOI:

https://doi.org/10.21423/aabppro20084489

Keywords:

synchronization program, reproductive management, fixed time AI, fresh extended semen, frozen semen

Abstract

Currently cattle producers in the United States are increasing their farm size for economic profit and using synchronization programs for a fixed time AI for better reproductive management. This requires insemination of large number of cows on a single day. With this trend, there is an opportunity to investigate the possibility of maintaining or improving the reproductive outcomes using fresh extended semen with low sperm numbers instead of frozen semen with high sperm numbers per insemination. The objective of this study was to compare fixed time AI pregnancy rate in Angus cross beef cows inseminated with frozen thawed or fresh extended semen.

Cover image of the 41st Conference Proceedings: A herd of cattle standing in the field, framed by a cloudy sky. Yellow background.

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Published

2008-09-25

Issue

2008

Section

Posters

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