Through scent, these horses decide to reject a mare which isn't in a physical condition to conceive. A stallion won't touch a mare if he senses something wrong. The nose knows. Economic Advantages At a busy farm, less hands-on labor for breeding reduces the number of people required. Hand-breeding demands at least two, and usually more, handlers.
Fewer employees can mean increased profits.
A seasoned stallion can settle a mare at his own pace, keeping her in production. Vaughan had an older mare which would appear to be in season, yet reject the stallion at that time. A week after she showed in season, she would accept the stallion, and the breeding succeeded in producing foals. Many registries have made provisions for pasture breeding. Inc. On registration and stallion service forms, the owner reports pasture breeding dates as a period of exposure.