Mare Breeding Services

When you need us

You’d like to breed your mare, and want to have strong
guidance, and all of the options available to you

Breeding your mare is a big commitment, but ourDr Pat Griffin, board certified theriogenologist, or equine reproductive specialist, viewing an ultrasound of a mare to check pregnancy. experienced veterinarians can help to ensure this process goes as smoothly and safely as possible. We can guide you every step of the way, including stallion selection, breeding preparation, insemination, pregnancy evaluation, foaling, postpartum assessment, and newborn evaluation. Our skilled staff is ready for any challenge that may arise along the way so you may have the ultimate reward – a healthy mare and foal.

What we do

We’re here to guide you and your mare through the entire breeding process

Prior to breeding your mare, we’ll perform a comprehensive reproductive evaluation on her, including a detailed ultrasound examination of her reproductive tract to assess her potential fertility as a broodmare. If possible or existing problems are identified, further diagnostics will be performed, including uterine culture and cytology, endometrial biopsy, and uterine endoscopy.

If your mare is a “problem” or high-risk mare, or has a history of sub-fertility, we offer a range of management and therapeutic options to maximize her chances of
becoming pregnant and maintaining her pregnancy to term.

We have extensive experience in managing mares for breeding with both
fresh-cooled and frozen semen, either on your farm or at our breeding
facility in Waunakee. When your mare becomes pregnant, we can determine
fetal sex, if desired, and are able to periodically monitor the progress of the
pregnancy and fetal development, particularly for high-risk mares.

For interested mare owners, complete embryo transfer services are available,
including cryopreservation or freezing of embryos for future use.


  • We’re often asked if it’s safe to exercise your pregnant mare, to what degree she should be worked, and when you should stop working her. Your broodmare is safe to be worked and ridden as needed. Read on to hear what Dr. Griffin has to say about breeding mares and exercise.
  • One of the most important parts of equine reproduction is choosing the right time to breed your mare. Dr. Griffin explains here how to choose when to breed your mare.
  • Before deciding to breed your mare, and while you’re choosing what stallion to use, make sure you test your horse for various genetic diseases. You should know what crosses might produce a lethal or performance limiting genetic issue.



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