Comparison of pregnancy rates achieved with frozen semen using two packaging methods. uri icon

abstract

  • The pregnancy rate achieved with frozen semen using two packaging methods was compared in two separate experiments. The sperm-rich fraction of the semen was collected and immediately extended in an egg-yolk based extender to a final concentration of 100 x 10(6) sperm/ml. Half of each ejaculate was packaged in 4.0-ml plastic straws and the other half in 10-to 12-ml flattened aluminum tubes. After detection of a 35-mm follicle, mares were inseminated daily until ovulation. Pregnancy was detected, and embryonic vesicle size was measured by ultrasonic echography Days 14 to 26 after ovulation. The one-cycle pregnancy rate achieved using both packaging methods was 50% overall (23 46 ), with 46% (12 26 ) and 55% (11 20 ) rates achieved, respectively, using straws and aluminum tubes. These rates were not significantly different.

published proceedings

  • Theriogenology

author list (cited authors)

  • Love, C. C., Loch, W. L., Bristol, F., Garcia, M. C., & Kenney, R. M.

citation count

  • 12

complete list of authors

  • Love, CC||Loch, WL||Bristol, F||Garcia, MC||Kenney, RM

publication date

  • January 1989