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Comparison of in vitro digestibility and chemical composition among sugarcane bagasses treated by four white-rot fungi

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ABSTRACT

The capabilities of four white-rot fungi to improve the digestibility of sugarcane bagasse for ruminants were determined. Bagasse was cultured with Lentinula edodes, Pleurotus eryngii, Pleurotus salmoneostramineus, Ceriporiopsis subvermispora (ATCC 90467) or C. subvermispora (CZ-3) at 26°C for 8, 12 or 16 weeks. The in vitro organic matter digestibility (IVOMD) and in vitro neutral detergent fiber digestibility (IVNDFD) in untreated bagasse were 45.6 and 40.3%, respectively. Meanwhile, the bagasse cultured with L. edodes and two strains of C. subvermispora, respectively, for 12 weeks, were elevated to 68.6 and 59.1%, 60.6 and 49.9% and 59.9 and 49.0%, respectively. In contrast, the IVOMD and the IVNDFD in bagasse cultured with P. eryngii and P. salmoneostramineus were the same or lower than those in untreated bagasse. In vitro gas production (IVGP) in bagasse cultured with L. edodes and two strains of C. subvermispora for 12 weeks was also higher than that of untreated bagasse. These changes in IVOMD, IVNDFD and IVGP demonstrate that L. edodes has a higher capability of improving the digestibility for ruminants than C. subvermispora, P. eryngii or P. salmoneostramineus.
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Keywords: Ceriporiopsis subvermispora; Lentinula edodes; in vitro digestibility; sugarcane bagasse; white-rot fungi

Document Type: Research Article

Affiliations: 1: School of Environmental Science, The University of Shiga Prefecture, Hikone-shi, Japan; 2: Office of the Ministry of Research and Technology, Jakarta, 3: Research Center for Biotechnology, Indonesian Institute of Sciences, Cibinong, Indonesia; 4: Department of Bioproduction Science, Ishikawa Prefectural University, Nonoichi-machi, Ishikawa-ken, and 5: Research Institute for Sustainable Humanosphere, Kyoto University, Uji-shi, Japan

Publication date: June 1, 2006

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