甜高粱茎秆袋装青贮研究  

Silaging of sweet sorghum straw in bags

作　　者：杜军国[1,2] 季彬 祁宏山[1,2] 曾杨 陈娟[1,2] 祝英 王治业[1,2] DU Junguo;JI Bin;QI Hongshan;ZENG Yang;CHEN Juan;ZHU Ying(Institute of Biology,Gansu Provincial Academy of Sciences,Lanzhou 730030, China;Gansu Provincial Research Center for Industrial Microbiology Engineering and Technology,Lanzhou 730030, China)

机构地区：[1]甘肃省科学院生物研究所,甘肃兰州730030 [2]甘肃省工业微生物工程技术研究中心,甘肃兰州730030

出　　处：《中国酿造》2018年第5期146-149,共4页China Brewing

基　　金：甘肃省科学院青年基金(2015QN-04);国家科技支撑计划(2012BAD14B10-4);国家星火项目(2012GA860003)

摘　　要：采用袋装室温堆放发酵方式,通过测定料温、p H值、乳酸菌数、粗蛋白、残糖等指标,对比4种不同处理对甜高粱秸秆发酵效果的影响。结果表明,用菌剂R2J1处理甜高粱秸秆具有产酸适宜、乳酸菌数、蛋白增量明显等优点。整个发酵过程中,平均发酵料温始终高于环境温度4.3℃;发酵18 d时,饲料中乳酸菌数达1.2×10^(10)个/g,此时饲料p H值为4.5,蛋白含量为9.89%,比发酵前增加了27.44%,各项指标均优于其他菌剂发酵结果,表明R2J1菌剂适用于西北高寒区甜高粱秸秆袋装青贮。The effects of 4 different treatments on the fermentation of sweet sorghum straw were compared by measuring the material temperature, pH, number of lactic acid bacteria, crude protein and residual sugar at the room temperature with stack fermentation in bags. The results showed that the treatment of sweet sorghum straw with starter R2 J1 had the advantages in acid production, number o f lactic acid bacteria and protein increment. Dur-ing the whole fermentation process, the average temperature of the fermented material was 4.3 ℃ higher than the ambient temperature. When fermen-tation for 18 d, the number of of lactic acid bacteria in the feed was up to 1.2×1010 CFU/g, at this time the feed pH was 4.5, the protein content was 9.89%, which was 27.44% higher than that of before fermentation. The performance of starter R2 J1 was better than the others, and it showed that the starter was suitable for sweet sorghum straw silaging in bags in the cold area of northwest of China.

关 键 词：甜高粱 秸秆 发酵饲料 乳酸菌 蛋白含量 

分 类 号：TQ914.1[化学工程] TQ920.6[轻工技术与工程—发酵工程]