Breeding season can be a stressful time for owners and horses alike. While horse owners are hustling to prepare facilities, the broodmares might be just as tense. Especially for young and maiden mares, the stress from being trailered to new facilities and being separated from herd mates might lead to stomach ulcers.

"Young mares and maiden mares may have trouble with stomach ulcers," said Carol Rose, the American Quarter Horse Association’s all-time leading breeder of performance horses and owner of Carol Rose Quarter Horses in Gainesville, Texas. "Breeders often send mares off the farm to breed, and younger mares may not be accustomed to being trailered or stalled.

"I sent a mare off the farm last year. She’s a very nervous mare and doesn’t like to be stalled, but the place we sent her could only put her in a stall. They were able to put her in an area where she could see other horses, but I put her on a stomach ulcer preventive anyway because I knew the situation was stressful for her," Rose said