首页 | 本学科首页   官方微博 | 高级检索  
     

添加糖蜜和乳酸菌制剂对西藏青稞秸秆和多年生黑麦草混合青贮发酵品质的影响
引用本文:赵庆杰,原现军,郭刚,闻爱友,巴桑,王奇,沈振西,余成群,邵涛. 添加糖蜜和乳酸菌制剂对西藏青稞秸秆和多年生黑麦草混合青贮发酵品质的影响[J]. 草业学报, 2014, 23(4): 100-106. DOI: 10.11686/cyxb20140412
作者姓名:赵庆杰  原现军  郭刚  闻爱友  巴桑  王奇  沈振西  余成群  邵涛
作者单位:1.南京农业大学动物科学技术学院饲草调制加工与贮藏研究所,江苏南京2100952.中国科学院地理科学与资源研究所,北京1001013.西藏日喀则地区草原工作站,西藏日喀则8570004.海南大学应用科技学院儋州校区,海南儋州571737
基金项目:“十二”国家科技支撑计划“藏北退化草地综合整治技术与示范”(2011BAC09B03),西藏主要农作物秸秆与栽培牧草混合青贮关键技术研究(XZ20093ZD),中国科学院西藏区域创新平台建设项目“促进农牧民增收的西藏农牧结合技术体系构建与示范”和海南大学应用科技学院(儋州校区)2013年度科研项目(Hyk-1308)资助
摘    要:为探究不同添加剂对青稞秸秆与多年生黑麦草(4∶6)混合青贮发酵品质的影响,试验设对照组(C)、乳酸菌制剂组(LAB)、糖蜜组(M)、乳酸菌制剂+糖蜜组(LAB+M)4个处理,青贮后第7, 24和45天打开,测定青贮发酵品质。结果表明,添加乳酸菌制剂加速了青贮早期乳酸发酵进程,但由于底物不足,青贮后期丁酸含量和氨态氮/总氮值有所升高;添加糖蜜补充了发酵底物,促进了乳酸发酵,显著(P<0.05)提高了乳酸含量,降低了pH值(P<0.05),从而有效地抑制了有害微生物的活性,减少了丙酸和丁酸的生成。乳酸菌制剂+糖蜜组与单独添加乳酸菌制剂组相比显著提高了青贮发酵品质, 但与单独添加糖蜜组相比差异不显著,表明发酵底物不足是限制青稞秸秆与多年生黑麦草混合青贮发酵品质的主要因素。

关 键 词:青稞秸秆  多年生黑麦草  混合青贮  添加剂  发酵品质
收稿时间:2013-08-22

Effect of adding an inoculant and molasses on fermentation quality of mixed silage of hull-lessbarley straw and perennial ryegrass in Tibet
ZHAO Qing-jie,YUAN Xian-jun,GUO Gang,WEN Ai-you,BA Sang,WANG Qi,SHEN Zhen-xi,YU Cheng-qun,SHAO Tao. Effect of adding an inoculant and molasses on fermentation quality of mixed silage of hull-lessbarley straw and perennial ryegrass in Tibet[J]. Acta Prataculturae Sinica, 2014, 23(4): 100-106. DOI: 10.11686/cyxb20140412
Authors:ZHAO Qing-jie  YUAN Xian-jun  GUO Gang  WEN Ai-you  BA Sang  WANG Qi  SHEN Zhen-xi  YU Cheng-qun  SHAO Tao
Affiliation:1.Institute of Ensiling and Processing of Grass,College of Animal Science and Technology,Nanjing Agricultural University,Nanjing 210095,China;2.Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China;3.The Prairie Workstation of Shigatse,Tibet 857000,China;4.College of Applied Science and Technology,Hainan University,Danzhou 571737,China
Abstract:To evaluate the effect of adding an inoculant (LAB) or/and molasses (M) on the fermentation quality of mixed silage of hull-lessbarley straw and perennial ryegrass during ensiling,an experiment was designed with the following treatments: control,LAB,molasses and LAB+molasses. Six silos per treatment were opened 7,24 and 45 days after ensiling and the fermentation quality was measured. Adding LAB accelerated the onset of lactic acid fermentation; however,there were increases in butyric acid and ammonia/total N during the latter stage of ensiling due to the lack of fermentable substrate. The addition of molasses supplied the fermentative substrates,which improved the fermentation quality and significantly (P<0.05) increased the lactic acid content,significantly (P<0.05) reduced pH and decreased propionic and butyric acid contents. Combination addition of LAB and molasses significantly improved the fermentation quality of mixed silage compared with LAB addition alone,but there were no significant differences in fermentation quality between silages treated by M alone and by M plus LAB. It is concluded that the lack of fermentation substrate is the major limiting factor for mixed silage of hull-lessbarley straw and perennial ryegrass.
Keywords:
点击此处可从《草业学报》浏览原始摘要信息
点击此处可从《草业学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号