Walk him in between sips. When he has stabilized, feed him grass hay and allow him his fill of water. Pasture Since pasture provides excellent exercise and nutrients, make best use of it by grazing it when it is 4 to 6 inches tall. As soon as it is grazed down, move the horse to another pasture. Before turning a horse out to pasture the first time, give him a full feed of hay.
Pasture horses can quickly become overweight or founder from too much lush pasture.
Since the digestive system of horses is designed to handle small frequent meals, feed two to three times every day. Feed at the same time every day. Make all changes in feed gradually whether it's a change in type or amount. If your horse gets 2 pounds of grain per feeding and you want to increase, feed 2 pounds for at least two days. Then increase to 3 pounds.