Loss of added urea nitrogen in ureatreated (4 percent) wheat straw can effectively be reduced from 35 to 20 percent using dilute sulphuric acid or green sorghum. The addition of acid did not affect the alkalinity of treated straw (8.40 to 8.64). Dry matter intake by male Murra buffalo calves due to treatments did not vary significantly. The relative retention of nitrogen (g/d) was significantly higher (p LT 0.05) in the acid (53.31) and green sorghum (45.58) treated groups. Ensiling of green sorghum with urea-treated straw (1:2) resulted in significantly better (p LT 0.01) digestibilities of crude fibre and cell wall fractions. The DCP and TDN values of treated wheat straw (T0, T1, and T2) were 7.10, 8.33, 6.49, 57.90, 55.64 and 62.58 percent for buffaloes