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.
Horses can do well on grass or alfalfa (or other legume) hay. Important factors to keep in mind for horse hay are the nutritional needs of the animals (mature horses will not need high protein or calcium levels unless they are mares nursing foals), and the way the hay was harvested.