The present study was conducted to investigate two different methods on soybean meal energy content in male Japanese quail. The experiment was carried out in a completely randomized design in three treatments: a) test diet (with total collection of excreta) (TC), b) test diet (with External marker (Cr 2 O 3 ) Method (CrO method) and c) normal diet for determination of endogenous losses. Five replications and six quails per experimental unit were used. The experiment period was fifteen days, ten days for adaptation to experimental cages and five days for the collection of excreta. Values of Apparent Metabolizeable Energy (AME) and True Metabolizable Energy (TME) were calculated on the basis of analysis of result. Feed intake (FI) was measured. Based on feed intake and dry matter records, dry matter consumption (DMC) was calculated. Excretion of DM was calculated based on excreta weight and DM of excreta in each replication. Dry matter digestibility coefficient was measured. There was no significant difference at P>0.05 probability level between TC and CrO method in energy values of soybean meal. The means of AME of soybean meal with TC and CrO method was 1925.58 and 1879.45 Kcalkg , respectively. Feedstuff metabolizeable energy estimation using the external marker method with the use of chromium oxide (Cr 2 O 3 ), was similar to that obtained using total excreta collection method, demonstrating that total excreta collection can be replaced by chromium oxide (Cr 2 o 3 ) marker methods in Japanese quail. The difference observed in the metabolizable energy values of soybean meal among this study and NRC recommendation suggested that Japanese quail can used energy content of soybean meal less efficiently than chickens.
