蚕豆秸秆拉伸膜裹包青贮营养成分动态变化研究  

Nutritional Ingredient Dynamic Changes of Bean Straws Silage Wrapped by Stretched Film

作　　者：岳信龙[1] 蔡明[2] 牟兰[2] 高月娥[3] 张文娟[1] 匡崇义[3] 徐驰[3] 黄必志[3] 

机构地区：[1]云南农业大学动物科技学院,云南昆明650201 [2]兰州大学草地农业科技学院,甘肃兰州730020 [3]云南省草地动物科学研究院,云南昆明650212

出　　处：《家畜生态学报》2016年第6期51-54,78,共5页Journal of Domestic Animal Ecology

基　　金：国家肉牛牦牛产业技术体系(CARS-38);国家牧草产业技术体系(CARS-35);云南省科技创新人才计划(2012HAO12)

摘　　要：蚕豆秸秆为供试材料,以拉伸膜裹包青贮为方法,初步研究了不同青贮时期(30、60、90、120、150、180、210、240d)的营养成分动态变化。结果显示:(1)pH值随青贮时间的延长呈现下降趋势,在青贮210d时达到最低值3.8以下;(2)霉变率随青贮时间的延长呈现上升状态,在青贮210d的时候超过45%;(3)NH3-N/TN随青贮时间的增加在青贮30d^60d内发生较明显的增加,但总体变化不大,在青贮90d以后变化趋于平缓;(4)CP含量在青贮60d以内有一个明显的下降过程,青贮90d以后变化逐渐趋于平稳;(5)EE随青贮时间延长,呈现不断积累的过程,但总体变化幅度较小;(6)NDF和ADF在青贮时间内变化波折,但从总体上看,青贮240d与新鲜样品相比,NDF和ADF只有少量降低,变化在5%以内。Taken bean straws as materials and wrapped silage by stretched film as means,the experiment was conducted to do a preliminary study on the nutrient dynamic changes of bean straws at different silage periods（30,60,90,120,150,180,210,240d）.The results show that：（1）PH value of the silage revealed a downward trend with the extension of the time,below the lowest 3.8at silage 210d;（2）The rotting rate increased with the extension of time,surpassing 45% at silage 210d;（3）NH3-N/TN increased obviously within 30d-60dwith stable overall change,and then reached a plateau after silage 90d;（4）CP content within 60 ddeclined obviously,and stabled after 90d;（5）EE accumulated with silage prolonged,but the overall change was slight;（6）NDF and ADF change fluctuated during silage,but in general,NDF and ADF at 240 ddecreased a little which was within 5% compared with fresh samples.

关 键 词：蚕豆秸秆 青贮 营养成分 动态变化 

分 类 号：S811.5[农业科学—畜牧学]