Choline is an essential nutrient for animals. It prevents abnormal accumulation of fat within liver cells and improves nerve transmission. In addition, choline also acts as a source of metabolic methyl groups. However, choline is synthesized little by animals, and added choline is easily breakdown in rumen. Rumen protected choline chloride is produced using microencapsulation technology, which can protect choline against rumen breakdown and release slowly further down the digestive tract.