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[Embryo transfer in horses--current status and future perspectives]

J Braun1

  • 1Gynäkologischen und Ambulatorischen Tierklinik, Ludwig-Maximilians-Universität München.

Tierarztliche Praxis
|December 1, 1994
PubMed
Summary

Embryo transfer in horses is rare due to limited superovulation techniques. Advances in oocyte aspiration and in vitro embryo production show promise for equine reproduction.

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Area of Science:

  • Reproductive biology
  • Equine science
  • Embryo transfer technologies

Context:

  • Embryo transfer (ET) is a valuable tool for equine reproduction, yet its application remains limited.
  • Current limitations in equine ET include challenges with superovulation and embryo cryopreservation.
  • Existing technologies for equine embryo manipulation lag behind those in other species like cattle.

Purpose:

  • To review the current state and challenges of equine embryo transfer.
  • To highlight emerging technologies that could advance equine reproductive practices.
  • To discuss the potential impact of new techniques on equine breeding and research.

Summary:

  • Equine embryo transfer is underutilized primarily due to difficulties in achieving superovulation.
  • Non-surgical methods exist for embryo recovery and transfer, but cryopreservation and bisection are limited by a narrow collection window for suitable embryos (morula).
  • In vitro embryo production, including in vitro maturation, fertilization, and embryo culture, is under development, with progress in ultrasound-guided transvaginal oocyte aspiration.

Impact:

  • Advancements in in vitro embryo production and oocyte aspiration techniques are expected to significantly boost the application of embryo transfer in horses.
  • These emerging technologies will enhance the understanding of mare reproductive biology.
  • Increased adoption of ET can accelerate genetic improvement programs in equine breeds.

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