Equine Theriogenology Service
The Equine Theriogenology Service at the Purdue University Equine Hospital provides reproductive care for mares and stallions, including breeding management, artificial insemination, embryo transfer, embryo freezing, semen collection, semen freezing and storage, pregnancy monitoring, infertility evaluation, and high-risk pregnancy care.
Whether you are planning a breeding, managing a mare that has not conceived, preparing a stallion for collection, or working with your veterinarian on a reproductive concern, our team can help you understand the process and next steps.
Call us at 765-494-8548 to request an appointment.

Equine reproductive services
Breeding horses requires careful timing, reproductive monitoring, technical skill, and clear communication. The Equine Theriogenology Service works with owners, breeders, and referring veterinarians to provide practical reproductive planning and hospital-based care.
Mare services
- Breeding management using cooled or frozen semen
- Artificial insemination
- Pregnancy ultrasound and monitoring
- Twin management and twin reduction
- Infertility evaluation
- Uterine biopsy
- Hysteroscopy
- Embryo transfer
- Embryo freezing
- High-risk pregnancy hospitalization
- Foaling out for high-risk pregnancies
Stallion services
- Stallion reproductive evaluation
- Semen collection
- Semen evaluation
- Semen cryopreservation
- Semen storage
- Phantom training
- Post-mortem gamete preservation
A practical, communication-focused approach
The Equine Theriogenology Service emphasizes timely appointments, clear explanations, and practical reproductive planning. Our team works to help clients understand the timing, options, and decisions involved in equine reproduction.
Many breeding cases involve more than one step. A mare may need monitoring before insemination. A stallion may need evaluation before collection or freezing. An embryo transfer plan may require careful coordination. A pregnancy concern may need ultrasound, monitoring, or hospitalization.
Our goal is to keep clients and referring veterinarians informed throughout the process so they can make decisions with a clear understanding of the horse’s reproductive care.
Equine embryo transfer is a reproductive procedure in which an embryo is collected from a donor mare after breeding and transferred as part of a planned reproductive process.
Owners may consider embryo transfer for several reasons, including breeding plans involving a valuable mare, future reproductive planning, or cases where embryo freezing may be useful. The best approach depends on the mare, breeding goals, semen source, timing, and veterinary recommendations.
The Equine Theriogenology Service can help owners understand what information is needed and whether embryo transfer planning is appropriate for their situation.
When to contact the service
Contact the Equine Theriogenology Service if you are:
- Planning to breed a mare
- Preparing to use cooled or frozen semen
- Considering embryo transfer or embryo freezing
- Managing a mare that has not conceived
- Concerned about a mare that has not maintained pregnancy
- Preparing a stallion for semen collection, freezing, or storage
- Seeking stallion phantom training
- Monitoring pregnancy
- Managing a twin pregnancy concern
- Seeking care for a high-risk pregnancy
- A veterinarian referring a mare or stallion for reproductive care
If you are unsure whether your horse needs a reproductive appointment, call us at 765-494-8548.

Services for mares
The Equine Theriogenology Service provides mare breeding management, artificial insemination, pregnancy monitoring, infertility evaluation, embryo transfer, embryo freezing, uterine biopsy, hysteroscopy, twin reduction, and high-risk pregnancy care.
Owners often contact us before breeding season, before ordering semen, after a mare has failed to conceive, or when a pregnancy needs additional monitoring. Early planning can help the team understand the mare’s history, breeding goals, semen source, timing, and any previous reproductive concerns.
Mare Breeding Management and Artificial Insemination
Problem Mares and Equine Infertility Evaluation
Embryo Transfer and Embryo Freezing
Pregnancy Ultrasound and High-Risk Pregnancy Care

Services for stallions
The Equine Theriogenology Service provides stallion reproductive evaluation, semen collection, semen freezing, semen storage, phantom training, and post-mortem gamete preservation.
Stallion owners may contact the service to plan semen collection and cryopreservation, evaluate fertility, prepare a stallion for collection, or discuss storage of frozen semen. The team can help owners understand what information is needed before scheduling and what to expect during the process.
Pregnancy monitoring and high-risk pregnancy care
Pregnancy monitoring is an important part of equine reproductive care. The Equine Theriogenology Service provides pregnancy ultrasound, twin management, twin reduction, and monitoring for mares with pregnancy concerns.
The service also provides hospitalization and foaling out for high-risk pregnancies. If your mare has a pregnancy complication or your veterinarian recommends additional monitoring, Call us at 765-494-8548 to discuss the next step.
What to expect
When you contact the Equine Theriogenology Service, the team may ask about your horse’s reproductive history, current breeding plan, previous pregnancies, semen source, records from your veterinarian, and any current concerns.
For some cases, the service may recommend an appointment at the Purdue University Equine Hospital. Other cases may require coordination with your referring veterinarian, additional records, or timing around the mare’s cycle, semen shipment, embryo work, or pregnancy status.
Because equine reproduction is time-sensitive, contacting the service early can help with planning.

Referring veterinarians
The Equine Theriogenology Service works with referring veterinarians on mare and stallion reproductive cases, including infertility evaluation, breeding management, semen services, embryo transfer, pregnancy monitoring, twin management, and high-risk pregnancy care.
Veterinarians can Call us at 765-494-8548 to discuss a referral.
Meet the team
The Equine Theriogenology Service is provided by the Purdue University Equine Hospital care team.
Clinicians
Veterinary Technicians
Veterinary Assistant
Common questions
Request an appointment
The Equine Theriogenology Service is here to help owners, breeders, and referring veterinarians plan and manage reproductive care for mares and stallions.
Call us at 765-494-8548 to request an appointment.