The essentials for any horse breeding lease agreement – what both mare and stallion owners should look for in a breeding contract. What's in our Breeding Contracts: OnSite Breeding Agreement, Shipped Semen Agreement, Broodmare Lease Agreement, Embryo Sale and Purchase Agreement.As a mare owner, I want a contract that indicates the stallion owner wants a foal on the ground as much as I do. Contracts here can be filled out online, saved and emailed. Are you breeding your horse this year? An equine industry lawyer shares what mare owners should know about stallion service contracts before signing them. From a breeders perspective, I am wondering what people hesitate over in a breeding contract? What is the deciding factor in choosing a stallion? When reviewing a stallion service contract, mare owners will want to pay close attention to the breeding method(s) offered in the contract. In the event breeding is.