Abstract: To evaluate the effects of lactic acid bacteria,corn cob and rice husk powder on the quality of peanut (Arachis hypogaea Linn.) vines silage,two varieties (H1 and H2) of peanut vine were ensiled with no additive control (CK),the lactic acid bacteria (LAB),the mixture of LAB and 5% rice husk powder (LAB+R), the mixture of LAB and 5% corn cob (LAB+C) respectively for 1 year,and the fermentation quality,microbial quantity,nutrient quantity and in vitro digestibility of these silages were determined after storage. The results showed that LAB+C could significantly reduce the pH value and ammonia nitrogen content and increase the lactic acid/acetic acid ratio of the silage. LAB and LAB+R had certain effect on improving fermentation quality in silage of H1 varieties. Compared with H2,silage of H1 varieties had higher crude protein content and lower fiber function content. Silage of H1 variety treatmented with LAB+C in had the lowest content of acid detergent lignin and the highest in vitro dry matter digestibility. Therefore,it is suggested to add the mixture of lactic acid bacteria and 5% corn cob (LAB+C) to peanut vine silage to improve silage quality.

Key words: Peanut vine, Lactic acid bacteria, Rice husk powder, Corn cob, Silage

摘要： 为评价乳酸菌、玉米芯和稻壳粉对花生(Arachis hypogaea Linn.)秧青贮品质的影响，本试验分别将乳酸菌(LAB)、乳酸菌和5%玉米芯混合(LAB+C)、乳酸菌和5%稻壳粉混合(LAB+R)添加进两个品种(H1和H2)的花生秧中进行青贮并测定其发酵品质、微生物数量、营养品质和体外消化率。结果表明，LAB+C的使用能够显著降低青贮饲料的pH值和氨态氮含量，提高乳酸/乙酸的比值。在H1品种中，LAB和LAB+R对于提高青贮饲料的发酵品质效果显著。H1比H2品种制作的青贮饲料具有更高的粗蛋白含量和更低的纤维组分含量。LAB+C处理的H1品种制作的花生秧青贮饲料具有最低的酸性洗涤木质素含量及最高的体外干物质消化率。因此，建议在花生秧青贮饲料中添加乳酸菌与5%玉米芯的复合添加剂以提高其青贮品质。

关键词: 花生秧, 乳酸菌, 稻壳粉, 玉米芯, 青贮