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Transcervical embryo transfer in performance mares.

P L Sertich1

  • 1Hofmann Center of the Section of Reproductive Studies, University of Pennsylvania, School of Veterinary Medicine, New Bolton Center, Kennett Square, 19348.

Journal of the American Veterinary Medical Association
|October 1, 1989
PubMed
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This study demonstrates successful equine embryo transfer, achieving a 65.7% pregnancy rate with single embryo transfers in recipient mares. Twin embryo transfers showed a lower success rate, highlighting the efficiency of single embryo application in equine reproduction.

Area of Science:

  • Equine reproduction and reproductive technologies.

Background:

  • Efficient embryo transfer is crucial for equine breeding programs.
  • Optimizing pregnancy rates in recipient mares requires careful management of embryo viability and transfer timing.

Purpose of the Study:

  • To evaluate the efficacy of transcervical embryo transfer in establishing pregnancy in recipient mares.
  • To compare pregnancy rates between single and twin embryo transfers in horses.

Main Methods:

  • Embryos were collected from donor mares via uterine flushing 7 days post-ovulation.
  • Synchronized recipient mares received single or twin embryos transcervically within 2 hours of collection.
  • Pregnancy was confirmed using ultrasonography 23 days after embryo transfer.

Main Results:

Related Experiment Videos

  • Embryos were recovered from 40.5% of uterine flushes.
  • Single embryo transfer resulted in a 65.7% pregnancy rate.
  • Twin embryo transfer yielded a lower pregnancy rate of 35.3%.

Conclusions:

  • Transcervical embryo transfer is an effective method for establishing pregnancy in horses.
  • Single embryo transfer offers a higher success rate compared to twin embryo transfer in equine reproduction.