切碎和揉丝对玉米秸秆青贮品质的影响  

Effect of Cutting up and Extrude-kneading on Maize Straw Silage Quality

作　　者：柳茜[1] 孙启忠[2] 徐丽君[3] 杨万春 乔雪峰[1] 刘晓波[1] LIU Qian;SUN Qi-zhong;XU Li-jun;YANG Wan-chun;QIAO Xue-feng;LIU Xiao-bo(Animal Husbandry of Liangshan Prefecture, Xichang 615042;Institute of Grassland Research Chinese Academy of Agricultural Sciences, Hohhot 010010;Hulunbeir Grassland Ecosystem Observation and Research Station, Institute of Agricultural Resources and Regional Planting of Chinese Academy of Agricultural Sciences, Beijing 100081;Liangshan Qiliba Sheep Farm, Zhaojue 616150)

机构地区：[1]四川省凉山州畜牧兽医科学研究所,西昌615042 [2]中国农业科学院草原研究所,呼和浩特010010 [3]呼伦贝尔国家野外站/中国农业科学院农业资源与农业区划研究所,北京100081 [4]凉山州七里坝种羊场,昭觉616150

出　　处：《中国奶牛》2018年第5期7-10,共4页China Dairy Cattle

基　　金：中国农业科学院创新工程(CAAS-ASTIP-IGR2015-02);国家现代农业(牧草)产业技术体系(CARS-35)

摘　　要：本试验以青玉米秸秆为原料,开展切碎和揉丝两种处理对其青贮品质影响的研究。结果表明,两种处理的玉米秸秆青贮p H均低于4.2,揉丝处理组(p H3.51)低于切碎处理组(p H3.89);两个处理组乳酸含量占总酸的比例均在80%以上,揉丝处理组乳酸含量达9.42%,比切碎处理组高出31.56%;干物质含量比切碎组高13.51%;粗蛋白含量比切碎组高4.98%;酸性洗涤纤维和中性洗涤纤维分别比切碎组低20.50%和17.13%。综合发酵品质和营养成分考虑,在西昌地区开展青玉米秸秆青贮采用切碎和揉丝处理都可以,经揉丝处理的玉米秸秆青贮品质更优,具有很好的应用前景。Research on silage quality was carried on by using maize straw as silage material with treatments of cutting up and extrude-kneading. Results indicated that, pH of two treatments were 3.51-3.89, and p H of extrudekneading treatment was lower than that of cutting up treatment. Lactic acid to total acid ratio of two treatments were above 80%, and lactic acid content of extrude-kneading treatment was that is improved by 31.56 than that of cutting up treatment. Compared to cutting up treatment, DM content of extrude-kneading treatment was 13.51% higher, CP content was 4.98 higher, and ADF and NDF were 20.50% and 17.13 lower respectively. Considering silage quality and nutrient content, maize straw silage with treatments of cutting up and extrude-kneading can be all carried on in Xichang, but silage quality with latter treatment was better, it had a good application prospect.

关 键 词：切碎 揉丝 玉米秸秆 青贮 

分 类 号：S823.4[农业科学—畜牧学]