紫花苜蓿和黑麦草混合青贮过程中主要营养物质变化规律研究  

Study on Mixed Silage Nutrients Variation of Alfalfa and Ryegrass

作　　者：莘海亮[1,2] 乔艳龙 李凌云[2] 吴文旋[2] 陈胜昌[2] 张森[1] 田景文[1] Xin Hailiang;Qiao Yanlong;Li Lingyun;Wu Wenxuan;Chen Shengchang;Zhang Sen;Tian Jingwen(Southeast of GuizhouNational Vocational and Technical College,Kaili Guizhou 556000,China;College of Animal Science,Guizhou University,Guiyang Guizhou 550025,China;Guizhou Vocational College of Agriculture,Qingzhen Guizhou 551400,China)

机构地区：[1]黔东南民族职业技术学院,贵州凯里556000 [2]贵州大学动物科学学院,贵州贵阳550025 [3]贵州农业职业学院,贵州清镇551400

出　　处：《贵州畜牧兽医》2019年第4期7-9,共3页Guizhou Journal of Animal Husbandry & Veterinary Medicine

基　　金：“黔东南常见牧草青贮品质研究”黔东南州科技计划项目(黔东南科合J字[2018]014);“苗药复方添加剂对织金白鹅营养健康调控技术集成与示范”贵州省农业攻关课题(黔科合支撑[2016]2587号)

摘　　要：为研究紫花苜蓿和黑麦草混合青贮过程中主要营养物质的变化规律,试验以贵州省常见紫花苜蓿和黑麦草按70∶30比例混合青贮,测定青贮第0、14、21、28、42、72、84、100、114、128、142d的主要营养物质含量。结果:从0~142d,随着青贮时间的延长,青贮饲料干物质中的粗蛋白含量逐渐降低,下降12.00%(P<0.05);中性洗涤纤维、酸性洗涤纤维含量也呈逐渐下降趋势,分别降低17.87%、17.70%(P<0.05);粗灰分含量呈上升趋势,上升29.31%(P<0.05)。结果表明:青贮过程中随着青贮时间的延长会导致蛋白质流失,但也降低了纤维素水平,增加了青贮饲料的可消化性。In order to study the changes of main nutrients in the process of mixed silage of alfalfa and ryegrass,the silage was mixed with common alfalfa and ryegrass in Guizhou Province at a ratio of 70∶30,and determination of major nutrients in silage was measured 0, 14,21,28,42,72, 84,100,114,128,142 d. Results:from 0 to142 d, the crude protein content in silage decreased gradually with the increase of silage time,which decreased by12.00%( P <0.05). The content of neutral detergent fiber and acid detergent fiber also decreased gradually,decreased by17.87% and17.70%,respectively ( P <0.05);the crude ash content increased,rising by29.31%( P <0.05). The results showed:that protein loss was caused by the prolongation of silage time during silage,but it also lowered the cellulose level and increased the digestibility of silage.

关 键 词：紫花苜蓿 黑麦草 混合青贮 营养物质 

分 类 号：S816.53[农业科学—饲料科学]