Cattle is an important farm animal which play significant role in farmers economy and form an integral part of the farming system in Indian agriculture by providing milk, manure and draught power with very little input. India has a large bovine population that is 57 % buffaloes and 16 % cattle of the world (Economic survey, Cattle is an important farm animal which play Cattle is an important farm animal which play significant role in farmers economy and form an integral part of the farming system by providing milk, manure and draught power with very little input. But their average growth and milk production is low. It is therefore essential to develop proper feeding strategies to match livestock production system with the available resources. Thus, there is a global interest to optimize the utilization of dietary protein within the ruminant system with respect to various productive traits. It is, therefore suggested that formaldehyde treatment of GNC (@ 1.0 g/100 g CP) should be taken up by the feed industry on a commercial scale for manufacturing bypass protein, as the feeding of treated groundnut cake proved beneficial in improving growth rate and milk production.