The Effect of Differences in the Ratio of Tofu Dregs and Fermented Rice Straw on Fiber Content

This study aims to determine the best fiber content in a mixture of tofu dregs and fermented rice straw. The rice straw mixed with EM-4 and urea then fermented for 21 days. The fermented rice straw then mixed with dried tofu dregs in 5 different concentration that repeated 4 times using completely randomized design method. The mixture treatment as follows: T1 = 100% tofu dregs; T2 = 100% fermented rice straw; T3 = 75% tofu dregs + 25% fermented rice straw; T4 = 50% tofu dregs + 50% fermented rice straw; and T5 = 25% tofu dregs + 75% fermented rice straw. The fiber content observed were the fiber content of lignin, cellulose, hemicellulose, the Neutral Detergent Fiber (NDF), and the Acid Detergent Fiber (ADF). The data obtained were analyzed using ANOVA followed by Duncan’s multiple range test. The laboratory analysis showed that the lowest NDF and ADF content resulted from tofu dregs, namely 38.86% and 26.29%, while the lowest hemicellulose content resulted from 50:50 mixture of tofu dregs and fermented rice straw (T4) with a value of 11.94%. The lowest cellulose content resulted from tofu dregs (T1) which was 16.5%, and the lowest lignin content resulted from a mixture of 75% tofu dregs and 25% fermented rice straw (T3) which was 3.41%. Based on the nutrient content, shows that tofu waste and rice straw have the potential to be used as feed ingredients, especially for ruminants or pseudo ruminants which still need fiber in their feed

Keywords: ADF, fiber, NDF, rice straw, tofu dregs