1 – The digestive system of a horses contains a simple stomach. The small size of this stomach reveals that horses are best suited for small, frequent meals.
2 – Digestion should be continuous. Horses perform optimally if they have hay or pasture in front of them at all times.
3- The grain (starch) portion of the diet is intended to be digested in the small intestine.
4 – Roughly 65% of the digestive capacity of the gastrointestinal system is dedicated to the digestion (fermentation) of plant fibers. This indicates that forage (such as hay or pasture) should be the main ingredient.