Client Information

Prepare for an upcoming visit, download forms and contracts, and learn more about the equine breeding season.

Prepare for your visit

Ideally, mare owners should have stallion(s) selected and all stallion contracts completed, fees paid, and contracts submitted to the appropriate personnel prior to arrival at the Equine Reproduction Laboratory. Some mares arrive at our facility in estrus and are ready to be bred soon after arrival. We do not want to miss an opportunity to breed the mare waiting on paperwork.


Before arriving at the Equine Reproduction Laboratory, please ensure your horse is current on all vaccinations:

Mare and stallion vaccinations

  • Eastern/western/Venezuelan equine encephalomyelitis
  • Equine herpesvirus (rhinopneumonitis)
  • Equine influenza
  • Rabies (recommended in Larimer County, CO)
  • Tetanus
  • West Nile virus

Pregnant mare vaccinations

  • Equine herpesvirus (rhinopneumonitis) at 5, 7, and 9 months
  • Equine rotavirus at 8, 9, and 10 months
  • Rabies and 7-way booster (4-6 weeks before due date) that includes:
    • Eastern/western/Venezuelan equine encephalomyelitis
    • Equine herpesvirus (rhinopneumonitis)
    • Equine influenza
    • Tetanus
    • West Nile virus

Your horse also needs a current Coggins test within 12 months and, depending on your state, a brand inspection and/or a health certificate may be needed for travel across state lines.

Contracts and Forms

We ask that you have your current Equine Reproduction Laboratory contract completed and returned to our office by mail/email/fax – including feeding instructions and any special requests – at least 24 hours before your appointment. You should also make sure your deposit has been paid in advance for your service.

If you are planning for mare management at the Equine Reproduction Laboratory, it is also helpful if your stallion contract(s) are completed, returned and paid in full in advance of your breeding timeline. Make sure you have a credit card on file and have the appropriate information for semen shipments.

Mare Services Contract
Embryo Transfer Contract
Assisted Reproduction Contract
Frozen Semen/Embryo Storage Contract
Stallion Services Contract
Shipped Semen Form
Shipped Semen Evaluation Form

Important Management Dates

  • Jan. 2: Mares are accepted for light therapy
  • Jan. 2: Foaling mares are accepted, but should arrive no more than 4 weeks before their due date. We recommend they arrive 10-14 days before their due date unless there is cause for concern
  • Feb. 1: On-farm mare management begins
  • July 1: End of on-site embryo transfers
  • Aug. 1: End-of-season mare management
woman squeezing sperm into a tube with a pipette


Some processes need to be completed off-site by a horse's primary care veterinarian. To streamline these processes and ensure consistency when Equine Reproduction Laboratory staff get involved, our specialists provide step-by-step instructions that horse owners can provide to their veterinarian if necessary.

Payment Policy

We accept cash, check, VISA, MasterCard, Discover, and American Express. CareCredit is not accepted.

All shipped semen clients must provide a credit card for collection/shipping fees prior to shipment.

All account fees are due at time of service and prior to departure of mare/foal/stallion/semen/embryo from the Equine Reproduction Laboratory. Estimated final billing can be sent upon request of owner. All invoice balances are payable within 30 days of monthly or final invoice.

Place a card on file

Make a secure account payment

For inexperienced breeders

New to equine reproduction? Learn the basics of breeding your mare.

Mare Breeding Basics