华北驼绒藜青贮加工及营养价值评价  

Processing and nutritional values of silage made from Ceratoides arborescens

作　　者：徐远志 刘新平 王立龙 胡鸿姣 何玉惠 张铜会 景家琪 XU Yuan-zhi;LIU Xin-ping;WANG Li-long;HU Hong-jiao;HE Yu-hui;ZHANG Tong-hui;JING Jia-qi(Naiman Desertification Research Station,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;Gaolan Station of Agricultural and Ecological Experiment,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Science,Lanzhou 730000,China)

机构地区：[1]中国科学院西北生态环境资源研究院奈曼沙漠化研究站,甘肃兰州730000 [2]中国科学院大学,北京100049 [3]中国科学院西北生态环境资源研究院皋兰生态与农业综合研究站,甘肃兰州730000

出　　处：《草业学报》2023年第12期150-159,共10页Acta Prataculturae Sinica

基　　金：中国科学院科技扶贫项目(KFJ-FP-202104);内蒙古自治区科技计划项目:科尔沁沙地生态沙产业关键技术集成试验与示范,中国科学院(A类)战略性先导科技专项(XDA26020104-01);内蒙古自治区科技计划项目(2022YFHH0063)资助。

摘　　要：华北驼绒藜是一种品质优良的饲用半灌木,通过青贮可以提高其营养价值,但其最佳青贮工艺尚不明确。本研究采用3×4双因素试验设计,探究原料不同含水量(45%、55%、65%)和益生菌剂添加量(0、0.02、0.04、0.06 g·kg^(-1)对华北驼绒藜青贮品质的影响。结果表明,含水量和益生菌剂显著影响华北驼绒藜青贮的营养成分(P<0.05);含水量显著影响粗蛋白、粗纤维和灰分含量(P<0.01);益生菌剂添加量显著影响灰分含量(P<0.05);在含水量65%以下,随着含水量的增加,营养价值增大;随着益生菌剂添加量的增加,营养价值呈先增大后减小的趋势;华北驼绒藜的最优青贮条件为:原料含水量65%、添加益生菌剂0.02 g·kg^(-1)。本研究可为华北驼绒藜青贮饲料的高效生产提供科学支持及理论依据,对促进草牧业的发展、解决饲料资源短缺问题具有重要意义。Ceratoides arborescens is a semi-shrub forage with excellent quality,its nutritional value can be improved by ensiling.The aim of this study was to determine the optimum method to produce C.arborescens silage.A 3×4 two-factor experimental design was used to study the effects of the water content of the raw material(45%,55%,65%w/w)and probiotic concentration(0,0.02,0.04,0.06 g·kg^(-1)on the quality of C.arborescens silage.It was found that the water content and probiotic concentration had significant effects on the nutrient composition of C.arborescens silage(P<0.05),the water content had significant effects on the contents of crude protein,crude fiber,and ash(P<0.01),and the probiotic concentration had significant effects on the ash content(P<0.05).At water contents lower than 65%(w/w),the nutritional value of the silage increased with increasing water content.With increasing probiotic concentration,the nutritional value of the silage initially increased and then decreased.The optimal conditions for making C.arborescens silage were 65%(w/w)water content of the raw material and 0.02 g·kg^(-1) added probiotic.The results of this study provide scientific support and a theoretical basis for the efficient production of C.arborescens silage.Successful ensilage of C.arborescens will promote the development of grass husbandry and help to solve the shortage of feed resources for livestock.

关 键 词：华北驼绒藜 青贮 营养价值 发酵品质 

分 类 号：S816.15[农业科学—饲料科学]