A series of experiment was conducted with male broiler chicks, and apparent metabolizable energy (AME) and true metabolizable energy (TME) values of corn, grain sorghum, soybean oil meal, wheat bran and fish meal were measured. It was found that AME and TME values of corn, grain sorghum and soybean oil meal were not affected with the age (3th, 6th and 9th week) of birds. The AME and TME values of 5 feedstuffs tested were: corn 3.321 and 3.607; grain sorghum 3.343 and 3.558; soybean oil meal 2.586 and 2.750; wheat bran 1.714 and 2.114: and fish meal 3.267 and 3.456 ㎉/g, respectively of air dry weight. Nitrogen (N) correction significantly (P$lt;0.01) influenced on ME values of all feedstuffs. The magnitude of N-correction for protein-rich feedstuffs was significantly (P$lt;0.05) higher than that of carbohydrate-rich feedstuffs, and there were significant (P$lt;0.01) correlation between classical ME and N-corrected ME values. When the calculated TME values of 9 rations obtained from the TME values of each feedstuffs were compared to the observed TME values of those rations, the two sets of values were in agreement. Although significant (P$lt;0.01) correlation exists between AME and THE values of 5 feedstuffs, accurate THE values could not be predicted from AME values with single regression equation.