Horses and ponies need a wide range of essential vitamins and minerals to enjoy good health and vitality. Even minor shortfalls can lead to poor performance or a lacklustre appearance. Use EQUIVITE® Original if: 1. Your horse receives low levels of compound feed (as a guide, below 2kg/4.5lbs a day). 2 Your horse is receiving no compound feed, and survives on forage alone. 3. You feed straights such as oats and barn to form a significant part of the hard feed.