If 2% of a typical horse's weight should be fed each day, a 1100 pound horse needs 22 pounds of feed per day. At least 25% of this -- 5.5 pounds -- can be beet pulp. Shreds can be fed all at once or split up between a morning or evening feeding. They can be fed alone or mixed with other feeds. Some nutritionists recommend soaking beet pulp pellets at least 30 minutes prior to feeding. Dried beet pulp will remain feedable for at least one year so long as they are kept dry.