[1]刘蓓一,丁成龙,许能祥,等.不同比例稻草和多花黑麦草混合青贮对饲料pH、微生物数量及有氧稳定性的影响[J].江苏农业学报,2018,(01):99-105.[doi:doi:10.3969/j.issn.1000-4440.2018.01.015]
　LIU Bei-yi,DING Cheng-long,XU Neng-xiang,et al.Effect of different levels of rice straw addition on pH, microorganism of ryegrass and rice straw mixed silage and stability after aerobic exposure[J].,2018,(01):99-105.[doi:doi:10.3969/j.issn.1000-4440.2018.01.015]
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不同比例稻草和多花黑麦草混合青贮对饲料pH、微生物数量及有氧稳定性的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年01期
页码:
99-105
栏目:
畜牧兽医·水产养殖
出版日期:
2018-02-25

文章信息/Info

Title:
Effect of different levels of rice straw addition on pH, microorganism of ryegrass and rice straw mixed silage and stability after aerobic exposure
作者:
刘蓓一1; 丁成龙1; 许能祥1; 董臣飞1; 张文洁1; 顾洪如1; 杨振峰2
（1.江苏省农业科学院畜牧研究所，江苏南京210014；2.江苏绿经园农业科技发展有限公司，江苏江阴214400）
Author(s):
LIU Bei-yi1; DING Cheng-long1; XU Neng-xiang1; DONG Chen-fei1; ZHANG Wen-jie1; GU Hong-ru1; YANG Zhen-feng2
(1.Institute of Animal Science, Jiangsu Academy of Agricultural Science, Nanjing 210014, China;2.Jiangsu Lvjingyuan Agricultural Science Development CO.， Ltd., Jiangyin 214400, China)
关键词:
稻草; 多花黑麦草; 混合青贮; pH; 微生物数量; 有氧稳定性
Keywords:
rice straw;  ryegrass; mixed silage; pH; microbiology; aerobic stability
分类号:
S816.5+3
DOI:
doi:10.3969/j.issn.1000-4440.2018.01.015
文献标志码:
A
摘要:
为探究多花黑麦草和稻草以不同比例混合青贮对饲料pH、微生物数量及有氧稳定性的影响，设5个处理，多花黑麦草和稻草比例分别为 5∶5（处理A）、6∶4（处理B）、7∶3（处理C）、8∶2（处理D）和9∶1（处理E），分析青贮过程和有氧暴露后青贮饲料的pH值、乳酸菌数量、酵母菌数量和霉菌数量的动态变化。结果表明，在青贮过程中，处理B的乳酸菌数量显著高于处理D和处理E，其中处理B的乳酸菌数量在青贮第1 d时达到 8.67×107CFU/g，在青贮第5 d、12 d、21 d时的乳酸菌数量显著高于其他4个处理。处理B的酵母菌数量均显著低于处理D和处理E。青贮61 d时，处理B和处理C的酵母菌数量小于 1.00×102CFU/g。从青贮第5 d开始，处理B和处理C的霉菌数量均小于 1.00×102CFU/g。有氧暴露期间，处理B的乳酸菌数量始终最多，处理B和处理C的霉菌数量始终最少。结合pH值、微生物数量及有氧稳定性指标，多花黑麦草和稻草以6∶4或7∶3的比例混合青贮最优。
Abstract:
The purpose of the current study was to evaluate the effects of different levels of rice straw addition on pH, microorganism of ryegrass and rice straw mixed silage and stability after aerobic exposure. Treatments were randomly distributed, in which:(1) the ratio of ryegrass and rice straw=5∶5(A); (2) the ratio of ryegrass and rice straw=6∶4(B); (3) the ratio of ryegrass and rice straw=7∶3(C); (4) the ratio of ryegrass and rice straw=8∶2(D); (5) the ratio of ryegrass and rice straw=9∶1(E). The value of pH, the number of lactic acid bacteria(LAB), yeasts and molds of ryegrass and rice straw mixed silage during fermentation and aerobic exposure were analyzed. The results showed that the number of LAB of group B was markedly higher than that of group D and E during silage. The number of lactic acid bacteria in group B increased rapidly and reached 8.67×107CFU/g at the first day, and the LAB had the highest number on the 5th, 12th and 21st days after ensiling compared with other groups. The number of yeasts of group B was significantly lower than that of group D and E. The number of yeasts of group B and C were less than 1.00×102CFU/g on the 61st days after ensiling. The number of molds of group B and C were less than 1.00×102CFU/g from the 5th day after ensiling. After aerobic exposure, the number of LAB was highest in group B, the number of molds was lowest in group B and group C. Taking into account pH, microorganism and aerobic stability, group B (the ratio of ryegrass and rice straw=6∶4) and group C (the ratio of ryegrass and rice straw=7∶3) were the better choice for silage production.

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备注/Memo

备注/Memo:
收稿日期：2017-07-11 基金项目：江苏省农业科技自主创新基金项目［CX（15）1003］；公益性行业（农业）科研专项（201303061）；江苏省现代农业项目（BE2016311） 作者简介：刘蓓一（1984-），女，江苏武进人，博士，助理研究员，主要从事饲草调制与草食动物营养研究。（Tel）15105198288；（E-mail）byliu1984@qq.com 通讯作者：顾洪如，（E-mail）guhongrujs@163.com
更新日期/Last Update: 2018-03-06