瘤胃中产琥珀酸丝状杆菌的纤维素降解机制及其在秸秆饲料化中的应用

Research progress on cellulose degradation mechanism of Fibrobacter succinogenes and application in straw feed

我国是农作物秸秆生产大国,农作物秸秆资源饲料化有助于缓解我国畜牧业饲料原料不足和秸秆类废弃物污染问题。秸秆中纤维素含量约为30%~40%,致使动物对秸秆消化速率减慢,成为秸秆饲料化的难点。动物瘤胃中分离的产琥珀酸丝状杆菌(Fibrobacter succinogenes)能够高效降解纤维素,其采用不同于游离纤维素酶降解机制和纤维小体降解机制的第三种纤维素降解机制。文章综述了产琥珀酸丝状杆菌纤维素降解机制的研究进展,为产琥珀酸丝状杆菌在秸秆饲料化中的应用提供参考。

China is a major producer of crop straw,and the utilization of crop straw in graziery will alleviate the shortage of feedstuff and pollution of straw waste.The ratio of cellulose in straw is about 30%~40%,which inhibits the digestion of straw by animals,resulting in the difficulty of straw feeding.Fibrobacter succinogenes isolated from animal rumen can degrade cellulose efficiently.It uses the third cellulose degradation mechanism,which is different from the free cellulase degradation mechanism and the cellulose body degradation mechanism.The paper summarizes the research progress of cellulose degradation mechanism of Fibrobacter succinogenes,to provide reference for the application of Fibrobacter succinogenes in straw feed.