【作者】 赵青余；

【导师】 桂荣；

【作者基本信息】 中国农业科学院 ， 动物营养与饲料科学， 2000， 硕士

【摘要】 本论文对利用一种真菌（DT菌）处理农作物秸秆以提高其营养价值进行了研究。农作物秸秆的中性洗涤纤维（NDF）在矿物质液体培养基中经DT菌发酵30d后，损失率高于未经DT菌发酵的对照组中NDF损失率（P＜0.01）；同时试验组发酵溶液中葡萄糖含量高于对照组溶液中葡萄糖的含量（P＜0.01）。分析了在25℃下DT菌对农作物秸秆进行10d、20d、30d固体发酵后农作物秸秆各种参数。不同发酵时间的农作物秸秆中NDF、酸性洗涤纤维（ADF）、纤维素和半纤维素含量比对照组秸秆中的含量明显减少（P＜0.05）；在发酵10d后，发酵秸秆的酸性洗涤木质素（ADL）含量和体外干物质消化率与对照组相比没有显著变化（P＞0.05），随着发酵时间的延长，其ADL含量明显低于对照组（P＜0.05），其体外干物质消化率高于对照组（P＜0.05）。消化试验中试验组发酵后玉米秸的干物质（DM）、NDF、ADF、纤维素和半纤维素表观消化率显著高于对照组（P＜0.05）。更多还原

【Abstract】 Improving the nutrition of crop straw (Maize straw and Wheat straw) treated with fungi ?DT fungus was studied. After a 30-day of liquid fermentation, The loss rate of neutral detergent fiber (NDF) of crop straw, which was treated with fungi in mineral culture medium, was more than that of the control (P<0.0 1). At the same time, the content of glucose in the fermentation solution was more than that of the control (P<0.0 1). The fungal fermented crop straw was analyzed for different parameters after a fermentation period of 10, 20 and 30 days at 25 0C. The content of NDF, acid detergent fiber (ADF), cellulose and hemicellulose of the fermented straw after different time were less than those of the control (P<0.05) Content of acid detergent lignin and in vitro dry matter digestibility of the straw after a 10-day fermentation were similar with those of the control (P>0.05), and after a 20-day and a 30-day fermentation, content of ADL of the fermented straw was less than that of the control (P<0.05), in intro dry matter digestibility of the fermented straw was more than that of the control (P<0.05). In digestibility test, the apparent digestibility of dry matter (DM), NDF, ADF, cellulose and hemicellulose of Maize straw were differently more than those of the control (P <0.05).更多还原