草业学报2018，Vol.27Issue(3)：90-97,8.DOI:10.11686/cyxb2017115
5株乳酸菌复合物与CaCO3,酶及尿素不同组合对全株玉米青贮品质影响
Effects on the quality of corn silage, of 5 strains of lactic acid bacteria with different combinations of added CaCO3, enzyme and urea
摘要
Abstract
Lactic acid bacteria (LAB) have the ability to suppress aerobic bacteria,yeast and fungi during forage fermentation.The effects of 5 LAB strains on fermentation quality and nutritive value of corn silage were evaluated at days 3,10 and 30 after being ensiled.LAB strains were combined with CaCO3,an enzyme formulation,and urea in 7 different treatment combinations,with 1 additional blank control treatment.The results show that a mixture of the 5 LAB strains increased the fermentation quality and nutritive value of whole corn crop silage.The addition of CaCO3 with lactic acid bacterial compounds further increased the lactic acid (LA) and acetic acid (AA) levels,especially AA.This fermentation pattern is linked to avoidance of excessively low pH and improvement of the silage nutritional quality.A treatment combination of urea and LAB also increased the AA,NH3-N and crude protein (CP) contents,again indicating prevention of excessively low pH and improved silage nutritional quality.A treatment combination of cellulase and amylase with LAB compound improved the quality of silage by increasing the production of water soluble carbohydrate (WSC),LA and AA.A treatment combination of CaCO3,urea,cellulose and amylase with LAB gave the best overall results,in terms of fermentation and nutritional quality of corn silage.The values for measures of silage fermentation quality and nutritive value changed rapidly in first 3 days of fermentation,and followed a different time course for the different additives.关键词
乳酸菌复合物/CaCO3/尿素/酶/青贮品质Key words
lactic acid bacterial compound/CaCO3/urea/enzyme/ensiling quality引用本文复制引用
王建福,雷赵民,万学瑞,姜辉,李洁,吴建平..5株乳酸菌复合物与CaCO3,酶及尿素不同组合对全株玉米青贮品质影响[J].草业学报,2018,27(3):90-97,8.基金项目
农业部公益性行业科研专项(20130305907),农业部公益性行业科研专项(201503134),兰州市科技局科技计划项目(农业科技攻关 （20130305907）
2012-2-159),甘肃省农业生物技术研究与应用开发项目(GNSW.2012-25),甘肃省科技重大专项(143NKDC017),甘肃省科技重大专项(17ZD2NC020)和甘肃省农牧厅秸秆饲料化利用研究专项([2016]269号)资助. （GNSW.2012-25）
