原料含水量及添加剂种类对青贮苜蓿品质的影响  

Effect of Raw Material Moisture Content and Additive Type on Silage Quality of Alfalfa

作　　者：闫星全 贾玉山 格根图 王志军 赵牧其尔 刘静怡 珠娜 孙鹏波 YAN Xing-quan;JIA Yu-shan;GE Gen-tu;WANG Zhi-jun;ZHAO Mu-qi-er;LIU Jing-yi;ZHU Na;SUN Peng-bo(College of Grassland,Resources and Environments,Inner Mongolia Agriculture University,Laboratory of Forage Cultivation,Processing and High Efficient Utilization of Ministry of Agriculture and Rural Affairs,Hohhot,Inner Mongolia 010011,China)

机构地区：[1]内蒙古农业大学草原与资源环境学院农业农村部饲草栽培、加工与高效利用重点实验室,内蒙古呼和浩特010019

出　　处：《草地学报》2023年第6期1861-1866,共6页Acta Agrestia Sinica

基　　金：内蒙古自治区科技计划项目“苜蓿‘双增双提’加工利用与贮藏关键技术研究与示范”(项目编号:2021GG0109);国家牧草产业技术体系(CARS-34);呼和浩特市重大科技专项项目(项目编号:2022-农-重-2-1)资助。

摘　　要：本试验以现蕾期紫花苜蓿(Medicago sativa L.)为原料,探究原料含水量(55%,70%)及0.4%丙酸(PA),0.2%山梨酸钾(PS),0.2%苯甲酸钠(SB)3种添加剂对青贮苜蓿营养品质及发酵品质的影响,在发酵60 d后开袋对各项指标进行测定。研究结果表明,原料含水量与添加剂的交互作用对青贮苜蓿的干物质(Dry matter,DM)、粗蛋白质(Crude protein,CP)、粗灰分(Ash)、可溶性糖(Water soluble carbohydrates,WSC)、乙酸(Acetic acid,AA)、丙酸(Propionic acid,PA)、丁酸(Butyric acid,BA)含量及氨态氮/总氮(Ammonia nitrogen/Total nitrogen,AN/TN)、pH值和干物质回收率(Dry matter recovery,DMR)均有显著影响(P<0.05)。对CP含量等12个营养和发酵指标进行灰色关联度分析后发现,原料含水量在55%时青贮苜蓿品质整体优于70%含水量,所有处理组中55%原料含水量+0.4%丙酸(PA)处理下的综合表现最好,可有效提高青贮苜蓿品质。This experiment investigated the effects of raw material moisture content and additives application on the nutritional quality and fermentation quality of alfalfa(Medicago sativa L.)silage,and the indicators were measured after 60 d of fermentation.The alfalfa was mowed at the bud-appearance stage.The results of the study showed that the interaction of raw material moisture content and additives application had significant effects(P<0.05)on DM content,CP content,Ash content,WSC content,acetic acid,propionic acid,butyric acid content,ammonia/total nitrogen ratio,pH value and Dry matter recovery.The grey correlation analysis of 11 nutritional and fermentation indicators showed that the overall silage quality of alfalfa under 55%raw material moisture content was better than that under 70%moisture content;and the best overall performance was achieved under 55%raw material moisture content+0.4%propionic acid(PA)application among all additives treated groups,which was able to effectively improve the quality of alfalfa silage.

关 键 词：紫花苜蓿 含水量 添加剂 青贮品质 

分 类 号：S816[农业科学—饲料科学]