秸秆替代全株四棱豆对全混合日粮发酵品质及有氧稳定性的影响  被引量:7

Fermentation quality and aerobic stability of the total mixed ration after replacing winged bean with straw

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作  者:邱小燕 奚恺锋[1,3,4] 谢新辉 田玉桥 伍贤进 曾军英 邵涛[5] 姚元枝 QIU Xiaoyan;XI Kaifeng;XIE Xinhui;TIAN Yuqiao;WU Xianjin;ZENG Junying;SHAO Tao;YAO Yuanzhi(College of Biological and Food Engineering,Huaihua University,Huaihua 418008,China;Horticulture&Landscape College,Hunan Agricultural University,Changsha 410123,China;Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province,Huaihua 418008,China;Key Laboratory of Hunan Higher Education for Hunan Xiangxi medicinal Plant and Ethnobotany,Huaihua 418008,China;Institute of Ensiling and Processing of Grass,Nanjing Agricultural University,Nanjing 210095,China)

机构地区:[1]怀化学院生物与食品工程学院,湖南怀化418008 [2]湖南农业大学园艺园林学院,湖南长沙410123 [3]民族药用植物资源研究与利用湖南省重点实验室,湖南怀化418008 [4]湘西药用植物与民族植物学湖南省高校重点实验室,湖南怀化418008 [5]南京农业大学饲草调制加工与贮藏研究所,江苏南京210095

出  处:《食品与发酵工业》2019年第24期98-104,共7页Food and Fermentation Industries

基  金:湖南省科技计划项目(2015SK2013);怀化学院校级项目(HHUY2017-09);湖南省教育厅一般项目(18C0992);湖南省双一流学科建设经费资助

摘  要:该文旨在探讨不同比例秸秆替代全株四棱豆对全混合日粮(total mixed ration,TMR)发酵品质和有氧稳定性的影响。试验按质量分数设10%、20%、30%、40%四个秸秆替代组,青贮35 d后测定其发酵品质和有氧稳定性。结果表明,30%和40%替代组显示良好的发酵品质,pH值较低(4.2左右),乳酸含量较高,氨态氮/总氮低于10%替代组。10%替代组和30%替代组的pH值在有氧暴露第9天显著(P<0.05)上升,20%和40%替代组的pH值在整个有氧暴露过程中没有明显的变化,10%替代组的乙酸产量最少,各组间乙酸含量都呈先下降后上升的变化趋势。综合考虑,40%替代组具有良好的发酵品质且有氧稳定性高,同时从秸秆最大化利用的角度出发,用40%秸秆替代发酵TMR中四棱豆最为适宜,可用于奶牛饲料的生产实践中。The purpose of this study was to investigate effects of using rice straw as substitute in the winged bean on fermentation quality and aerobic stability of total mixed ration(TMR). The experiment consisted of four groups with different substitution percentage-10%, 20%, 30% and 40%(g/g). After 35 days of the silage, the fermentation quality and the aerobic stability was analyzed. The results showed both 30% and 40% substitution produced good fermentation quality with a low pH value(about 4.2), high lactic acid content and low ammonia nitrogen/total nitrogen value. The pH values of the control group and 30% substitution group increased significantly on the 9 th day of aerobic exposure(P<0.05). There was no significant change in pH for the 20% and 40% substitution groups during the entire exposure process. The 10% group produced the least amount of acetic acid. During TMR fermentation, the acetic acid content of each group decreased initially, then increased. The aerobic stability of the 30% substitution group was low, while that of the 20% and 40% groups were high. After comprehensive evaluation including maximum utilization of straw, substituting with 40% of rice straw was the most suitable substitution amount for winged bean in TMR. This percentage has the potential for producing milk cow forage.

关 键 词:秸秆 全株四棱豆 全混合日粮 发酵品质 有氧稳定性 

分 类 号:S816.6[农业科学—饲料科学] TQ920.6[农业科学—畜牧学]

 

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