This comparative feeding experiment was performed with basal rations and two calorie levels of high energy ration which were made by heated soybean meal. Each calorie level of these rations were 930 Cal/lb.(1st treated lot; T₁), 1030 Cal./lb.(2nd treated lot; T₂) and basal lot(830 Cal of metabolizable energy per pound). The chickens used were 5 weeks old, and following results were obtained. 1) Increased body weight in both high level energy lots(T₁ and T₂) was higher than basal lot, and results of analysis of variance has shown a significancy of 5% levels on each other, but according to L.S.D. test, there was no significancy between the T₂ lot and basal lot. 2) With respect to feed consumption, there were able to save the feed in order of T₂ lot, T₁ lot and basal lot. The L.S.D. test has shown a significancy of level between T₂ lot and basal lot, and about 9% of feed were saved. Also between T₁ lot and basal lot, there was a significancy of 5% level and about 3% of food were saved, 3) With respect to economical study, the feed cost per bird of treated lots was higher than basal lot, therefore we knew that the practical worth of heated soybean meal was little. However net profit per bird of T₁ lot(29.17 won) was higher than basal lot(36.43 won) when we sold them for broiler. On the contrary, T₂ lot(24.85 won) was lower than basal lot.