Cake is received at extraction of oil from seeds of oil-bearing crops pressing. At such way in cake there is a sufficient large amount of fats (7 - 10) thanks to what they have high nutritional and power value. On a chemical composition it is a valuable forage for a bird. Cake is a part of the displaced forages. Cakes usually have the form of the pressed plates of different size - they are better and longer stored in such look.