Open AccessFermentation Quality and in Vitro Nutrient Digestibility of Fresh Rice Straw-Based Silage Treated with Lactic Acid Bacteria
Author(s) -
Budi Santoso,
B. Tj. Hariadi,
V Sabariah,
Thimotius Sraun
Publication year - 2014
Publication title -
media peternakan
Language(s) - English
Resource type - Journals
eISSN - 2087-4634
pISSN - 0126-0472
DOI - 10.5398/medpet.2014.37.2.115
Subject(s) - microbial inoculant , silage , fermentation , lactic acid , food science , straw , dry matter , nutrient , chemistry , completely randomized design , agronomy , zoology , bacteria , biology , genetics , organic chemistry
The aim of the experiment was to evaluate fermentation characteristics and in vitro nutrient digestibility of fresh rice straw-based silage ensiled with addition of epiphytic lactic acid bacteria (LAB) inoculant. The experiment was arranged in a completely randomized design, with 2 × 2 factorial arrangement of treatments. The first factor was the ratio of fresh rice straw (FRS), tofu waste (TW) and cassava waste (CW) consisted of two levels i.e., 40 : 20 : 40 and 40 : 25 : 35, on dry matter (DM) basis). The second factor was the level of LAB inoculant with two levels ie., 0 and 20 mL/kg FM. The treatments were (A) FRS + TW + CW with the ratio of 40 : 20 : 40, without LAB inoculant; (B) FRS + TW + CW with the ratio of 40 : 20 : 40 + LAB inoculant; (C) FRS + TW + CW with the ratio of 40 : 25 : 35, without LAB inoculant; (D) FRS + TW + CW with ratio of 40 : 25 : 35 + LAB inoculant. Results showed that addition of LAB inoculant in silage increased lactic acid concentration (P<0.01) (3.7% vs. 5.2% fresh matter (FM) and V-score (84.6 vs. 89.6) (P<0.05). Concentrations of lactic acid and V-score were higher in silages with high cassava waste (A and B) (P<0.05) compared to silage with low cassava waste (C and D). The IVOMD of rice straw-based silage was affected by the ratio of silage materials and the level of LAB inoculant (P<0.01). There was no interaction between the ratio of silage materials and the level of LAB inoculant (P>0.05) on chemical composition, fermentation quality of silage and in vitro digestibility. It was concluded that mixture silage with ratio of 40 : 20 : 40 with the addition of LAB inoculant had the best fermentation quality and nutrient digestibility than other silages