| Summary: | Effective Microorganisms-4 ( EM-4) is a mixture consists of photosynthetic bacteria, lactic acid bacteria (Lactobacillus sp), yeast (Saccharomyces sp), Actinomycetes and fermentation mushroom (Aspergillus sp, Penicillium sp). EM-4 able to increase digestibility capacity through the balancing of microorganism in digestive tract. The objectives of the research are to know the influence of giving various concentration of EM-4 fermented feed on feed protein digestibility, meat protein and increasing body weight of broiler chicken. Complete Random Design (RAL) involving five treatments with five repetitions were used in this study. The treatments given were subsequently of: addition of 5% (PI), 10% (P2), 15% (P3) and 20% (P4) of starter solution and a control group (P0) without any addition of starter solution. The Broiler Chicken used was 25 broiler cocks produced by CP 707 of PT. Charoen Pokphand Jaya Farma. The protein content was measured by Kjedahl method. Collected data were then analyzed statistically by ANOVA and followed with DMRT test with significance level of 5%. The result of the research indicated that the treatment significantly increased the digestibility of feed protein, meat protein content and increasing of body weight of broiler chicken. The use of EM-4 at the concentration of 15% (P3) increased feed quality and feed efficiency by increasing feed protein content. Therefore, addition of EM-4 fermented feed could increase feed protein digestibility, meat protein content and increasing body weight of broiler chicken.
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