Abstract
The aim of this research was to determine the NDF and ADF content of rice straw<br />fermented with several types of microorganism at different temperatures. Rice straw was<br />obtained from rice fields in Ishigaki District, Okinawa, Japan. The types of microbes used<br />were Lactobacillus fermentum, Bacillus subtilis, Bacillus coagulant Saccharomyces<br />cerevisiae, and Aspergillus niger. The mainplot was temperature (25, 35, 45°C) and the<br />subplot was microorganism. Each treatment has 3 replications. There were two groups for<br />controls, i.e. the control without molasses and the control with molasses. The rice straw<br />fermented within 3 weeks. The ADF content in all temperature treatments showed that S.<br />cerevisiae and A. niger treatments were higher (P&lt;0.01) than that in other microorganism<br />treatments. Hemicellulose content in S. cerevisiae and A. niger were tend to lower (P&lt;0.01)<br />compare to others microorganism treatments in all temperature treatments. The lowest<br />hemicelluloses content of fermented rice straw are showed by S. cerevisiae and A. niger at<br />45°C. These finding suggested that the ADF content were high in S. cerevisiae and A. niger<br />treatments, but showed decrease in hemicellulose and increase in cellulose and lignin.<br />Key words: rice straw, fermentation, ADF, NDF
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