author(s)
Bornalee Handique, Rojita Yengkhom and Lalit Kumar Maurya

abstract
At present poultry farming is the most dynamic, fastest expanding segment in animal husbandry sector and profitable meat producing industry in the country. But availability of quality and quantity of feed is the major problem to feed the poultry and increse production of poultry. Cereal grains which make up the bulk of poultry rations are deficient in critical amino acids like lysine, methionine, threonine and tryptophan. Moreover animal protein supplements such as fish and meat meal though rich in these essential amino acids, their use in poultry ration are not affordable for their short supply and very expensive and restriction for use due to adulteration. Now in addition of feed protein, it become necessary for supplementation of commercially available synthetic amino acids in rations to meet the amino acid needs of broilers for improve production as well as to production of cost effective diets.