Analysis of Silage Quality and Microbe Quantity During Aerobic Exposure of Beet Root and Corn Stover Mixed-ensilage

doi:10.11733/j.issn.1007-0435.2019.01.025

Acta Agrestia Sinica ›› 2019, Vol. 27 ›› Issue (1): 192-198.DOI: 10.11733/j.issn.1007-0435.2019.01.025

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Analysis of Silage Quality and Microbe Quantity During Aerobic Exposure of Beet Root and Corn Stover Mixed-ensilage

ZHOU Rui¹, LIU Liu-shan², LANG Xia², WANG Cai-lian², SONG Shu-zhen², WU Jian-ping¹

1. College of animal science and technology, Gansu Agricultural University, Lanzhou, Gansu Province 730070, China;
2. Animal Husbandry, Pasture and Green Agriculture Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu Province 730070, China

Received:2018-07-12 Revised:2018-12-24 Online:2019-02-15 Published:2019-04-13

甜菜块根和玉米秸秆混贮营养品质及有氧暴露期微生物数量分析

周瑞¹, 刘立山², 郎侠², 王彩莲², 宋淑珍², 吴建平¹

1. 甘肃农业大学动物科学技术学院, 甘肃兰州 730070;
2. 甘肃省农业科学院畜草与绿色农业研究所, 甘肃兰州 730070

通讯作者: 吴建平,E-mail:wujp@gsagr.ac.cn
作者简介:周瑞(1991-),女,宁夏中卫人,博士研究生,主要从事动物遗传育种与繁殖专业,E-mail:zhour1222@163.com
基金资助:
动物遗传育种与草食畜生产体系（2017GAAS30）；农业部公益性行业科研专项（201503134）；农业部绒毛用羊产业技术体系饲养管理与圈舍环境（CRAS-39-18）资助

Abstract

Abstract: This study was conducted to observe the changes of silage quality and microbe quantity during aerobic exposure for mixed-ensiling beet root and corn stover with different proportions,and screen the best ratio of beet root and corn stover for mixed silage. The results showed that the content of CP,Ca and P was significantly higher in T2 group than T1,T3,T4 group (P<0.05),the content of WSC was significantly higher in T2 group than other groups (P<0.05),and the loss ratio of dry matter was significantly lower than other groups (P<0.05). pH was significantly lower in T2 group than T0 and T1 groups (P<0.05),the content of lactic acid was significantly higher in T2 than T0 and T1 groups (P<0.05),the content of NH₃-N was significantly lower in T2 group than other groups (P<0.05). Propionic acid and Butyric acid were not detected in T0 and T1 groups. During aerobic exposure,with the increase of beet root proportion,the mold and yeast quantity showed an increasing trend,lactic acid bacteria quantity showed an decreasing trend,and in T1 group,the lactic acid bacteria quantity was highest,the mold and yeast quantity were lowest. Comprehensive analysis,when the ratio is 10:90,it is more conducive to the long-term preservation and utilization of beet nutritional quality.

Key words: beet root, corn stover, silage quality, microbe quantity

摘要： 本试验旨在研究甜菜块根和玉米秸秆按照不同混合比例青贮后营养品质及有氧暴露期微生物数量的变化，筛选调制青贮饲料时二者最优的混合比例。结果表明：T2组粗蛋白、Ca和P的含量均显著高于T1、T3、T4组（P<0.05），T1、T2组水溶性碳水化合物含量均显著高于其他3组（P<0.05），而干物质损失率均显著低于其他3组（P<0.05）；T2组pH分别显著低于T0、T1组（P<0.05），乳酸含量显著高于T0、T1组，NH₃-N含量显著低于其他4组（P<0.05），T0、T1组未检测到丙酸、丁酸；在整个有氧暴露期，随着甜菜块根添加比例的增加，酵母菌和霉菌数量逐渐升高，乳酸菌数量逐渐降低，且T1组乳酸菌数量最高，酵母菌和霉菌数量最低。综合分析，二者比例为10：90时，更有利于甜菜营养品质的长期保存与利用。

关键词: 甜菜块根, 玉米秸秆, 青贮品质, 微生物数量

CLC Number:

S816.5+3

ZHOU Rui, LIU Liu-shan, LANG Xia, WANG Cai-lian, SONG Shu-zhen, WU Jian-ping. Analysis of Silage Quality and Microbe Quantity During Aerobic Exposure of Beet Root and Corn Stover Mixed-ensilage[J]. Acta Agrestia Sinica, 2019, 27(1): 192-198.

周瑞, 刘立山, 郎侠, 王彩莲, 宋淑珍, 吴建平. 甜菜块根和玉米秸秆混贮营养品质及有氧暴露期微生物数量分析[J]. 草地学报, 2019, 27(1): 192-198.

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Analysis of Silage Quality and Microbe Quantity During Aerobic Exposure of Beet Root and Corn Stover Mixed-ensilage

甜菜块根和玉米秸秆混贮营养品质及有氧暴露期微生物数量分析

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