This is a whole line of products, which includes exchangeable methionine protected from destruction in the rumen. The KESSENT formula contains a high concentration of protected methionine per kilogram of product. The encapsulation technology is based on the physiological processes of ruminal and intestinal digestion of animals, namely the time spent in each part of the gastrointestinal tract. The optimal size and specific density of the particles makes it possible to reduce the average time the feed stays in the rumen and to increase the rate of passage of the product through the rumen.