摘要：This study aims to determine the level of use of the leaves and seeds of the rubber fermentation (DBKF) as a 100% replacement for soybean meal in the ration of broiler chickens that do not interfere with the performance of broiler chickens. The study consisted of a series of field experiments. Experiments in the field/cage to test the response of biological production (percentage of body weight gain and carcass) and gross profit in broiler chickens aged 1 day as many as two hundred and forty tail Arbor Strain acres. The draft completely randomized design with six treatment is replacement of 0, 20, 40, 60, 80 and 100% of soybean meal protein in leaves and rubber seed fermentation and 4 replicates with 10 chickens for each box. Data were analyzed statistically using ANOVA and if it shows a marked influence followed by Duncans test/DMRT. Variables measured were feed intake, body weight gain, feed conversion , carcass percentage and income over feed cost (IOFC) of broiler chickens. The results showed that the production performance of broiler chickens mainly on feed intake, weight gain and feed conversion is not too much affected by the use of rubber seed leaves and fermentation (DBKF) in cattle rations. Soybean meal protein replacement level with leaves and rubber seed fermentation (DBKF) in the ration can be done up to 80% in broiler rations.
