构树与苜蓿不同配比对全混合日粮(TMR)发酵品质及有氧稳定性的影响  

Effect of different ratios of Broussonetia papyrifera and alfalfa on fermentation quality and aerobic stability of TMR

作　　者：刘子怡 宛博 蔡瑞 王希庆 余海忠 田朋姣 LIU Zi-yi;WAN Bo;CAI Rui;WANG Xi-qing;YU Hai-zhong;TIAN Peng-jiao

机构地区：[1]湖北文理学院食品科学技术学院·化学工程学院,湖北襄阳441053 [2]中国农业大学工学院,北京100083

出　　处：《饲料研究》2023年第12期105-109,共5页Feed Research

基　　金：湖北省大学生创新创业项目(项目编号:X202110519007);湖北省襄阳市科技计划项目(项目编号:2021ABA003618);湖北文理学院教师科研启动项目(项目编号:kyqdf2021011)。

摘　　要：试验旨在研究构树与苜蓿不同配比对发酵全混合日粮(TMR)发酵品质及有氧稳定性的影响。以构树、苜蓿、豆粕、麦麸、玉米粉、啤酒糟、燕麦草、预混料、食盐为原料调制TMR。试验设5个试验组,试验1组、试验2组、试验3组、试验4组、试验5组TMR中苜蓿和构树的比例分别为36∶0、27∶9、18∶18、9∶27、0∶36,每组3个重复。厌氧发酵56 d。结果显示,随着构树比例的增加,发酵TMR的乳酸、乙酸、丙酸、氨态氮、水分含量升高,均未检出丁酸,可溶性碳水化合物、中性洗涤纤维和酸性洗涤纤维含量降低。试验2组发酵TMR的pH值、霉菌毒素含量最低,有氧稳定性最高,氨态氮/总氮在5%以下。研究表明,苜蓿和构树的比例为27∶9时,制作发酵TMR较为适合。The experiment was to study the effect of different proportions of Broussonetia papyrifera and alfalfa on fermentation quality and aerobic stability of TMR.The TMR was prepared with the ingredients of Broussonetia papyrifera,alfalfa,soybean meal,wheat bran,corn meal,brewer's lees,oat straw,premix and salt.Five experimental groups were set up,the proportions of alfalfa and Broussonetia papyrifera in TMR of group 1,group 2,group 3,group 4 and group 5 were 36∶0,27∶9,18∶18,9∶27,0∶36,respectively,with three replicates in each group.Anaerobic fermentation for 56 d.The results showed that the content of lactic acid,acetic acid,propionic acid,ammonia nitrogen and water in fermented TMR increased with the increase of the proportion of Broussonetia papyrifera,but no butyric acid was detected,the content of soluble carbohydrate,neutral detergent fiber and acid detergent fiber decreased.The pH value and mycotoxin content of fermentation TMR in group 2 were the lowest,the aerobic stability was the highest,and the ammonia nitrogen/total nitrogen was below 5%.The study indicates that when the ratio of alfalfa to brachycarpus is 27∶9,it is suitable for making fermented TMR.

关 键 词：构树 苜蓿 发酵全混合日粮 发酵品质 有氧稳定性 

分 类 号：S816[农业科学—饲料科学]