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Abstract
The nutritive value of rice straw biodegraded with Pleurotus tuberregium (PTR) were studied through analysis of their chemical composition, cell wall components, and in vitro fermentation characteristics. Chemical analysis showed an increase in the crude protein from 4.375 at (0% for 8 weeks) to 9.625 (at 0 % for 8 weeks), and increases from 3.500 (at 15% POS for 4 weeks) to 9.625 (at 15% POS for 6 weeks). Fungal treatment decreases crude fiber from 37.00 % in 0% POS rice straw treatment at 8 weeks to 27.00% in 0 weeks of biodegradation. The neutral detergent fiber, acid detergent fiber and hemicellulose was significantly different (p<0.05). A significant higher (80.33) OMD was obtained in rice straw after 8 weeks of biodegradation, and the gas volume produced was not significantly different after 24 hours of Biodegradation. It is therefore concluded from this study that P. tuberregium treatment on rice straw with 0% and 15% POS improved the potential feeding value of the resultant substrate. Therefore, the product of fungal treatment has a good potential as feed resources for ruminants.
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