Abstract: A method for encapsulating amino acids, vitamins and/or medications where the rumen bypass of the amino acids, vitamins and/or medications is increased. Ruminant supplements produced by the method for encapsulating, methods for producing milk and methods for increasing the production of milk protein.

Abstract: An animal feed that comprises a feedstuff and a coating, where the coating increases the amount of the feedstuff that passes through the rumen without being degraded by the rumen microflora, thereby delivering a larger portion of that feedstuff's associated preformed protein, and the essential amino acids comprising that protein, to the lower gastrointestinal tract. A process for making an animal feed, where the animal feed has enhanced rumen bypass nature of feed ingredients and their associated nutrients, particularly preformed protein and the amino acids that comprise the protein. Methods of increasing the rumen bypass of phosphatidylcholine, methods of increasing the vitamin E value of a feedstuff, methods for increasing rumen escape of the protein and amino acids in a ruminant animal.