Evaluation of Nutrient Digestibility and Metabolizable Energy of Yeast-Fermented Acacia mangium Leaf by Japanese Quails

The nutrient digestibility and the metabolizable energy (AME) of Acacia mangium leaf (AM) yeast-fermented AM (YFAM) by Japanese quails were investigated. Fifty-four 4-weeks-old divided into 3 groups with six replications three quails. Each quail was randomly fed an experimental diet composed dextrose (protein-free for determining endogenous excretion) 40 % 40% YFAM. raised individually in a metabolic cage, where feed water provided ad-libitum. Both intake feces weight recorded. Experimental diets excreta sampled subjected to proximate analysis gross energy. results composition indicated that fermentation yeast highly significantly increased (P<0.01) dry matter (DM), ash, nitrogen-free extractives (NFE) content but decreased crude protein (CP), fiber (CF), (GE) content. In addition, birds dietary YFAM compared showed (P≤0.01) DM, organic (OM), CP, GE EE CF digestibility. utilization greater FI, retained, intake, net (NPU), AME than those AM. conclusion, AMLM improved enhanced nutrients, utilization, quail.