A limiting factor in the development of animal husbandry is the use of grain mixtures when feeding animals. This leads to a decrease in weight gain and conversion of feed. In the production of feed in Russia, the share of grain crops accounts for 66.2%, in Germany - 30%, in France - 43.7%, in the United States - 53%, in other countries of the EEC - 38%. An important problem in the feed industry associated with the reduction of the share of grain crops in raw materials is identified. Russia in comparison with the developed countries lags behind in the production of compound feeds both in volume and in the range and quality of the finished product. Reducing the share of grain crops in feed can only increase its feed value. One of the ways to increase the value of the grain mixture is micronization: the digestibility of starch increases, the protein complex of the grain changes, inhibitors of the digestive tract are inactivated, aromatic substances are formed that improve the taste properties of the grain. Pasteurization of the grain mixture occurs, thereby reducing the level of fungal microflora by 99.5%. Due to heat treatment, the native starch becomes modified. There is an increase in the compound of sugars and dextrins in two to three times. The degree of gelatinization increases to 35%. This makes starch more accessible to the animal body, because its hydrolytic cleavage increases two to five times. But due to the lack of domestic equipment at feed mills micronization of grain is rarely used.