As with all horses that have a specific job to do, the breeding stallion should be fed for optimum performance results. The nutritional requirements vary for stallions during the off season and breeding season. During the season when the stallion is required to work he will need to be fed for his increased energy requirements. If a stallion competes in the off season, his feed requirements will change very little. A stallion should be provided round the clock forage in the form of hay or pasture. He should also be fed a grain ration 2 to 3 times daily. His grain should be approximately two thirds of a lb per 100 lbs of body weight. If he becomes too fleshy on this amount, adjust accordingly. There has been evidence that including a vitamin supplement that includes the vitamins E and C may increase a stallion's breeding efficiency. Like all horses, stallions should be provided free access to a salt and mineral block as well as a constant fresh water supply.
During the season, a stallion may lose condition as he is distracted by his duties and focusing on nature's call. It is important to take all necessary measures to ensure your stallion is eating well enough to maintain the energy levels required for him to perform, as well as to maintain proper body condition. It is wise to try and feed your stallion somewhere away from the mares, as this could help him focus on eating. However, if he is unable to eat and restless if out of sight of the mares, he should be feed in an area next them. Some stallions just feel better when they can keep a watchful eye on the ladies. Like all horses, stallions are individuals and their feed needs will vary depending upon a number of things. Age is a major factor to consider, the young stallion's needs will differ greatly from the needs of the senior stallion. If a stallion is young, supplements to aid in proper growth and development should be incorporated into his feed program. If a stallion is uninterested in eating, grain top dressed with a dollop of molasses, or another sweet treat may encourage him to indulge.
If despite the best of efforts, a stallion loses condition it is wise to have the stallion checked by a veterinarian for the presence of gastric ulcers. Some stallions are predisposed to gastric ulcers due to bloodlines and or activity levels.