Abstract: [Objective]Xinjiang small reed distributed widely and which is good forage resources of ruminants. [Method]This study will isolate and identify Lactobacillus from the self-regulating Xinjiang small reed silage. The trains were acidogenic tests that identified the advantages trains of Xinjiang small reed silage. 11 strains of Lactobacillus were isolated from the self-regulating reed silage of different origin. According to the criteria and description of Bergey's manual of systematic bacteriology(The eighth edition),which include two strains Lactobacillus pentosus(Hz2-1,Hz2-2), two strains Lactobacillus plantarum(Hz3-1,Hz3-2), two strains lactobacillus dung(Zar2-8,Zar2-9), two strains Lactobacillus brevis(Zar8-3,Zar8-4) , three strains Lactobacillus delbrueckii subsp.bulgaricus (Gsr1-1,Hz1-1,Zar9-4) were identified.Based on a strain for the fermentation acid test, it was found that a strong acid production capacity were observed from HZ2-1, HZ3-1,the pH up the minimum could reach 3.50,which was the main strains from fermentation process of Xinjiang small reed.

摘要： [目的]筛选新疆小芦苇青贮中优良的乳酸杆菌.[方法]研究将从自制的新疆小芦苇青贮中分离出乳酸杆菌进行鉴定,对鉴定出的菌株进行产酸试验,确定新疆小芦苇青贮中的优势菌株.[结果]试验共分离得到了11株乳酸杆菌,根据<伯杰氏细菌鉴定手册>(第八版)中的种属表述结果,经鉴定2株(Hz2-1和Hz2-2)为戊糖乳杆菌(L. pentosus),2株(Hz3-1和Hz3-2)为植物乳杆菌(L.plantarum),2株(Zar2-8和Zar2-9)为牛粪乳杆菌(L.dung),2株(Zar8-3和Zar8-4)为短乳杆菌(L. brevis),3株(Gsr1-1、Hz1-1和Zar9-4)为德氏乳杆菌保加利亚亚种(L.delbrueckii subsp.bulgaricus).[结论]从不同菌株发酵产酸试验的结果来看,发现Hz2-1,Hz3-1具有较强的产酸能力,pH最低可达3.50,是新疆小芦苇青贮发酵过程中的主要产酸菌株.