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.
However, that they can and do eat meat does not mean that they should. A horse may be trained to eat meat, or it may be driven to it by need. This doesnât mean that a regular diet of meat in the long-term is a good thing. Your horse may like an occasional bite of your hamburger or tuna sandwich and can eat it without harm. However, since we donât know the long-term effects on most horses, a diet high in meat would be inadvisable (along with expensive).