There is a long tradition of using grains and cereal-based concentrates, especially those derived from oats and barley, in horse rations. Such ingredients are commonly an important part of rations for work horses and horses in training, since these have increased demands for energy which are difficult to meet from forage alone. Oats are commonly fed whole or crushed, while barley and other grains are main ingredients in concentrate mixtures, whether in the form of pellets/nuts or muesli/mix. The distinctive thing about grains is that they contain about 50% starch and…