All grains contain starch. The majority of grain-based foods in your diet should come from whole grains, however. Aside from starch, these foods are full of other nutrients like B vitamins, iron, magnesium and fiber.ifferent Kinds of Vegetables. All veggies contain a little starch, but some are classified as nonstarchy. These vegetables, including lettuce, peppers, asparagus, onions, eggplant and artichokes, are very low in starch.
The natural diet of the horse is grass. Grass contains most of the nutrition a horse requires to be healthy. It also contains silica, which is important for dental health. Primitive horses can live on sparse rations and often have to make do with less than ideal pasture and living conditions.
Cereal hay made from oats, barley or wheat can also be used for feeding horses. Oat hay or green feed is a common forage for horses in many parts of North America. Often oat hay is available because the oat crop did not mature to be harvested as grain.ereal hay made from oats, barley or wheat can also be used for feeding horses. Oat hay or green feed is a common forage for horses in many parts of North America. Often oat hay is available because the oat crop did not mature to be harvested as grain.