Feed Feed Basic types of feeds: Animal feeds are classified as follows: (1) concentrates, high in energy value, including fat, cereal grains and their byproducts (barley, corn, oats, rye, wheat), highprotein oil meals or cakes (soybean, canola, cottonseed, peanut [groundnut]), and byproducts from processing of sugar beets, sugarcane, animals, and fish, and (2) roughages, including ...