贮藏期和添加绿汁发酵液对袋装苜蓿青贮的影响  

The Effect of Different Storage Time and Dilution Previous Fermented Juice on Bagged Alfalfa Silage

作　　者：许庆方[1] 周禾[1] 玉柱[1] 李胜利[1] 韩建国[1] 白春生[1] 薛艳林[1] 白景隆[1] 

机构地区：[1]中国农业大学动物科技学院

出　　处：《草地学报》2006年第2期129-133,146,共6页Acta Agrestia Sinica

基　　金：国家"948"项目(202099);国家科技成果转化项目(2002710020908);天津市重大农业科技合作项目(0202020208)

摘　　要：研究添加不同稀释倍数绿汁发酵液的袋装苜蓿青贮贮藏180 d和400 d后的发酵品质和营养价值。结果表明,添加绿汁发酵液可以显著降低贮藏400 d袋装苜蓿青贮的pH值(P<0.01),乳酸含量极显著增加(P<0.01),乙酸、丙酸、丁酸和氨氮含量极显著减少(P<0.01),而对干物质、中性洗涤纤维、酸性洗涤纤维、粗蛋白质含量及体外消化率的影响不显著;与贮藏180 d相比,贮藏400 d后pH值显著下降(P<0.01),有机酸含量显著增加(P<0.01),中性洗涤纤维和粗蛋白含量显著增加(P<0.01),干物质、中性洗涤纤维、酸性洗涤纤维、粗蛋白质消化率显著提高(P<0.01)。The effect of different dilution previous fermented juice on bagged alfalfa silage sampled at 180 d and 400 d were studied. The result indicated that the pH and the acetic acid, propionic acid, butyric acid, and ammonia nitrogen content of bagged alfalfa silage sampled at 400 d decreased significantly （P（0. 01） and lactic acid content increased significantly （P（0. 01） with the previous fermented juice, and the dry matter, neutraldetergent fiber, acid-detergent fiber, and crude protein content and in vitro digestibility were not affected. Compared with the bagged alfalfa silage sampled 180 d, the organic acid, neutral-detergent fiber, crude protein, the in vitro dry matter, neutral-detergent fiber, acid-detergent fiber, and crude protein digestibility of silage sampled at 400 d increased significant （P〈0.01） except the decreased pH.

关 键 词：苜蓿 青贮 绿汁发酵液 贮藏期 发酵品质 营养价值 

分 类 号：S816.3[农业科学—饲料科学]