晾晒和添加剂对紫花苜蓿青贮发酵品质和营养成分的影响  

Effects of wilting and additives on fermentation quality and feeding value of Medicago sativa silages

作　　者：葛剑[1] 杨翠军[2] 刘贵河[1] 杨志敏 董卫英 张建[1] 李光[1] 邓海军[5] 孔伟[6] 

机构地区：[1]河北北方学院动物科技学院,河北张家口075131 [2]河北北方学院生命科学研究中心,河北张家口075000 [3]张家口市农业科学院,河北张家口075131 [4]张家口市姚家房镇政府,河北张家口075000 [5]中国农业大学动物科技学院,北京100094 [6]河北北方学院法政学院,河北张家口075000

出　　处：《江苏农业学报》2014年第3期595-601,共7页Jiangsu Journal of Agricultural Sciences

基　　金：农业部公益性行业(农业)科研专项基金项目(201203024);河北省教育厅青年基金项目(2011231)

摘　　要：为研究晾晒和添加剂(甲酸、蔗糖和EM菌剂)对紫花苜蓿(Medicago sativa)青贮饲料品质的影响,以初花期的紫花苜蓿为原料,在新鲜和晾晒条件下分别设置甲酸(0.4%)、蔗糖(2.0%)和EM菌剂(0.1%、0.2%和0.4%)处理,制作袋装青贮饲料,室温下贮存60 d,启封后进行青贮饲料品质鉴定。结果表明,晾晒处理能显著抑制苜蓿青贮饲料的不良发酵(P<0.05),提高青贮饲料营养价值;甲酸、蔗糖和EM菌液均不同程度地改善了新鲜和晾晒处理的苜蓿青贮发酵品质和饲用价值,其中,添加0.1%EM菌液的青贮效果与甲酸和蔗糖处理效果相近,均优于0.2%和0.4%EM菌液处理;同时晾晒处理和添加剂作用能显著改善苜蓿青贮饲料的发酵品质。Alfalfa silages made of flowering alfalfa and half-dried silages made of withered alfalfa were treated with formic acid （0. 4%）, sucrose （2. 0%） or EM （0. 1%, 0. 2% or 0. 4%）, respectively. Each treatment had three replica-tions. After fermented at room temperature for 60 d, the silage quality was identified. Wilting significantly restrained fer-mentation of alfalfa silages, consequently improved mutritional value. Fermentation quality and feeding value of alfalfa silages were improved in varying degrees by the treatments of formic acid, sucrose or EM. Effects of 0. 1%EM treatment on silages were close to those of formic acid or sucrose, all better than those of 0. 2% or 0. 4%EM treatments. It was concluded a treatment combining wilting＆amp;nbsp;and additives could significantly improve the fermentation quality of alfalfa silage.

关 键 词：紫花苜蓿 青贮饲料 晾晒处理 添加剂 

分 类 号：S816.6[农业科学—饲料科学]