压扁处理对苜蓿干燥特性及干草品质的影响  

Effect of Crushed Treatment on Drying Characteristics and Quality of Alfalfa Hay

作　　者：王坤龙 李兆林 侯美玲[2] 王石莹 陈利娜 刘鹰昊 

机构地区：[1]内蒙古奶联科技有限公司,呼和浩特010020 [2]内蒙古农业大学生态环境学院,呼和浩特010018

出　　处：《中国畜牧兽医》2015年第11期2984-2990,共7页China Animal Husbandry & Veterinary Medicine

基　　金：现代农业国家奶牛产业技术体系(CARS-37)

摘　　要：为确定田间调制苜蓿干草适宜的压扁程度,本试验以紫花苜蓿为研究材料,通过不同程度压扁茎秆处理,分析苜蓿在调制过程中水分散失规律、干燥特性及营养成分含量,并利用体外消化试验进行验证。结果表明,在苜蓿干燥过程中,含水量均呈现先快后慢的下降趋势,压扁处理苜蓿干燥速度显著快于未压扁处理(P<0.05),压扁程度越大,干燥速度越快;重度压扁处理使苜蓿茎叶干燥趋于同步,叶片保存率较高;中度压扁处理苜蓿干草营养成分保存较好,干物质(DM)、粗蛋白质(CP)体外消化率高。综合分析认为,中度压扁为紫花苜蓿干草田间调制过程中适宜的压扁程度。In order to determine the appropriate level of the crush process of alfalfa hay in field,this study used alfalfa as research material with the process of crushing stalk in varying degrees,and analyzed the rule of the moisture loss,and the characteristic in drying process and nutrients content in the modulation process,and used the in vitro digestion experiments to validate the result.The results showed that the content of moisture demonstrated the tendency which was decreased fast at first and then slow down,the speed of the process of crushing was significantly faster than unflattened treatment during alfalfa drying process（P〈0.05）,the degree of crushing was greater,the speed of drying was faster.The treatment of crushed made the stem and leaf went synchronous during the process of drying,and the rate of leaf reservation was higher.Moderate flattening alfalfa was drying faster,and the better preservation of nutrients,and it had higher DM,CPin vitro digestion rate,it was concluded that the moderate crushed was the appropriate degree of flattening alfalfa hay in feild.

关 键 词：苜蓿 压扁 干草品质 体外消化 

分 类 号：S816.9[农业科学—饲料科学]