The objective of straw treatment is to increase the digestibility of straw and/or the amount of it voluntarily consumed so that digestible energy intake by animals from straw is increased. Methods of treating straw may be classified broadly into physical, chemical and biological categories. Among physical methods of significance are grinding and pressure cooking. Very fine grinding in ball mills and irradiation, while effective in improving digestibility, are so expensive that they are unlikely ever to become commercially significant. Chemical methods currently being developed all employ alkalis. Other chemicals like chlorine can also be used to improve digestibility but are more expensive and more difficult to handle than the alkalis and no technology involving their use has yet been developed. The alkali treatment methods may be classified as follows. One of the method of treating straw to increase the digestibility is the Beckmann method which belongs to the chemical treatment - wet methods.