Foals typically wean between four-to-six months of age, which correlates with the natural decline in milk production from the mare. Increase the foal’s ratios over a three-week period while gradually eliminating grain from the mare’s diet. The foal should eat two-to-three percent of its weight in good-quality forage and concentrates per day with forage being the majority of the ration.

Weanlings and yearlings require a ration that contains more protein and energy than a mature horse. As the horse’s growth begins to slow, rations should be adjusted to about two percent of the horse’s weight. By the time the horse is two years of age, the protein and energy content of the diet will be similar to a mature horse.