Patent No. 595611 Disclosed is a ruminant feed composition, comprising: a granulated core comprising L-lysine sulfate, the granulated core having a granular size of about 0.3 mm to about 3.0 mm； and a coating composition comprising two or more layers of a coating material that promotes rumen bypass and maintains high intestinal digestibility surrounding the core, the coating material consisting essentially of: a. a vegetable oil that is at least partially hydrogenated, the vegetable oil being selected from the group consisting of palm oil, soybean oil, rapeseed oil, cottonseed oil, and castor oil； and b. a modifying agent selected from the group consisting of stearic acid, oleic acid, lecithin, and palm oil, the modifying agent being present in an amount of from about 0.5 wt% to about 10 wt% of a final product weight； wherein: the coating material has a melting temperature in a range of from about 50 DEGREE C to about 80 DEGREE C； the weight % ratio of core material to coating material is from 50:50 to 70:30； and the coating material layers cause the composition to exhibit a rumen bypass rate of at least 80% and an intestinal digestibility rate of at least 70%.
