Weaning is the process by which a newborn begins consuming solid foods (other than milk). The process involves transitioning to a more nutrient dense diet and increasing the consumption of food. To accomplish this, you should give the foal time to adjust to the new diet and do it gradually. It's even better if the weaning process can be performed in a safe, familiar environment, where the foal is surrounded with his family members. A new foal should begin to eat solid foods between seven and eight weeks of age. Ensure foals are eating their weaning ration before they are separated from the mare. Feed them hay at a rate of nine to ten pounds per day, and the grain portion of their diet should be the primary vehicle for delivering essential nutrients.