Artificial insemination and embryo transfer in mares.

Area of Science:

• Reproductive biology
• Veterinary science
• Animal breeding

Background:

• Artificial insemination and embryo transfer are key reproductive technologies in mares.
• These technologies aim to maximize offspring production and revenue.
• Advances in hormonal treatments like equine follicle-stimulating hormone (eFSH) enhance superovulation.

Purpose of the Study:

• To summarize advancements in equine embryo preservation techniques.
• To highlight the role of cryopreservation in equine reproduction.
• To discuss the benefits of embryo transfer and cryopreservation for commercial breeding.

Main Methods:

• Collection of equine embryos typically occurs on day 7 or 8 post-ovulation.
• Younger embryos, around day 6.5, are preferred for cryopreservation.
• Cryopreservation involves specific protocols to preserve embryo viability.

Main Results:

• Cryopreservation enables long-term storage and transport of equine embryos.
• Preserved embryos can be successfully implanted into recipient mares.
• This technology facilitates international trade and genetic exchange of valuable equine lines.

Conclusions:

• Equine embryo cryopreservation is a vital tool for reproductive veterinarians.
• It enhances the efficiency of producing multiple foals from elite mares.
• Cryopreservation supports global efforts in equine genetic conservation and commercial breeding programs.