At stud is a phrase used to describe a stallion that has been retired from racing or competition and is now available for breeding service. A stallion stands at stud at a breeding farm or stud farm that manages bookings, collects semen, arranges breedings with visiting mares, and handles the associated logistics. The phrase appears in breed registries, sales catalogs, bloodline research, and marketplace listings as a standard descriptor of a stallion's current status and purpose.
Types of Breeding Service
- Live cover (natural service): The mare is transported to the stallion's location and bred directly. Required by some breed registries, including the Jockey Club for Thoroughbreds. Produces 100% of registered Thoroughbred foals.
- Cooled shipped semen (AI): Semen is collected, extended in a cooling medium, and shipped overnight to the mare's location for artificial insemination within 24-48 hours. Accepted by most registries except Thoroughbred. More convenient for mare owners; allows geographic access to distant stallions.
- Frozen semen: Semen is cryogenically preserved and stored indefinitely. Allows use of a stallion's genetics after death. Accepted by many registries; conception rates are typically lower than fresh or cooled semen.
Stud Fees
A stud fee is the charge for one breeding season or one confirmed pregnancy (live foal guarantee) with a specific stallion. Fees range from under $500 for local pleasure-horse stallions to over $300,000 for elite Thoroughbred sires at major breeding farms. Most stud fees are quoted as either a flat service fee (payable at breeding) or a live foal guarantee (payable when the mare produces a live, standing foal). The fee reflects the stallion's own performance record, the earnings and quality of his offspring, and market demand for his bloodlines.