Forage feed should be used to meet the basic nutritional needs of the horse. The use of concentrate feed was ‘necessitated’ came into the service of man. The level of performance expected from our horses cannot be supported by pasture or forage alone, in addition to which, we have a relatively short growing season in our latitudes. The basic concept of concentrate feed is to provide such nutrients that can only be supplemented in concentrated form. For instance, it might prove difficult to fully meet the energy needs of a hard working horse by just feeding it forage.