UF Large Animal Hospital
Reproduction
Providing complete equine breeding and reproductive care for mares and stallions.

The UF Large Animal Hospital Reproduction Service is dedicated to providing specialized equine breeding and reproductive care for your mares and stallions. Selected procedures in camelids and small ruminants are also offered. Our service operates at the hospital and in an ambulatory capacity.
At the UF Large Animal Hospital, our Reproduction Service is committed to delivering exceptional care for equine breeding and reproductive health. We specialize in diagnosing and treating a range of conditions in mares, stallions, and occasionally, camelids and small ruminants.
Our ambulatory service enables us to provide a comprehensive range of reproductive procedures and services, from fertility evaluation to reproductive surgery and ultrasound testing. We also offer on-farm consultations to discuss your breeding options and create a customized plan for your horses.
Our experienced veterinarians and staff are dedicated to helping you optimize the health and fertility of your mares and stallions, ensuring the success of your breeding program.
Basic Breeding Services for Mares
- Breeding management using fresh, cooled, or frozen semen
- Pregnancy diagnosis
- Twin reduction by manual crush
- Infertility evaluation and treatment
- Evaluation of endometrial biopsies
- Diagnosis and removal of ovarian and uterine tumors
- Management of retained placentas and other peripartum conditions
- Live-cover management
- Venereal disease testing
Advanced Breeding Services for Mares
- Treatment and breeding management of the problem mare
- Management of high-risk pregnancies
- Deep horn insemination
- Diagnosis and removal of uterine cysts
- Endoscopic evaluation of the uterus (hysteroscopy)
- Embryo transfer
- Embryo freezing
- Management of advanced twin pregnancies with ultrasound guidance
- Dystocia management
- Reproductive surgerie
Basic Breeding Services for Stallions
- Fertility evaluation
- Semen collection and evaluation, including:
- Cooling trial in multiple semen extenders
- Sperm morphology
- Semen collection for shipment
- Stallion training for semen collection
- Semen freezing
- Frozen semen storage and management
- Ultrasonographic evaluation of the male genitalia
Advanced Breeding Services for Stallions
- Advanced stallion evaluation
- Evaluation of the male genitalia
- Advanced semen analysis
- Reproductive behavior evaluation
- Management of ejaculatory failure
- Ultrasonographic evaluation of the internal reproductive tract
- Endoscopic evaluation of the internal tract (urethroscopy)
- Testicular biopsy
Equine Breeding Facilities
- Hydraulic height-adjustable phantom mare
- Full-service laboratory
- USDA-approved semen collection & distribution center
- Barn designated for stallions
- Liquid nitrogen semen storage
- Basic and intensive care facilities for foaling and high-risk pregnancies
Our Team
Clinicians
Luis H de Aguiar PhD
Audrey A Kelleman DVM, DACT
Fellows, Residents, and Interns

Nayara Laquiz
Staff
- Liane, LVT – Assistant Manager
- Tracy – Technician