草业学报2018，Vol.27Issue(2)：156-162,7.DOI:10.11686/cyxb2017161
不同添加剂和青贮密度对紫花苜蓿青贮品质的影响
Interactions between additives and ensiling density on quality of Medicago sativa silage
摘要
Abstract
Medicago sativa (alfalfa) was used to make silage,with and without addition of additives.Alfalfa plants were freshly harvested at the initial blooming stage,when their dry matter content was about 400 g · kg-1 (fresh matter basis).The effects of additives and ensiling density on the quality of alfalfa silage were investigated in an experiment with eighteen treatment levels.The quality of silages was analyzed after 45 days of fermentation.The results showed that silage treated with S (sucrose),S+LP (sucrose+Lactobacillus.plantarum) and S+ LC (sucrose+Lactobacillus.casei) had lower pH,butyric acid content,NDF neutral detergent fiber content,and acid detergent fiber content than silages without these additives.Treatments with CE (acremonium cellulose),LP+CE,and LC+CE did not significantly improve the quality of silage.Treatments with additives resulted in higher quality alfalfa silage than treatments without additives (P＜0.05).Preparing silage with higher density did not significantly improve its quality but significantly increased its DM (dry matter) content and ammonia nitrogen/total nitrogen ratio (P＜0.05).The additive× density interaction was not a significant factor for silage quality (P＞0.05).关键词
紫花苜蓿/密度/添加剂/青贮品质Key words
Medicago sativa/density/additives/silage quality引用本文复制引用
王木川,杨玉玺,于奕东,玉柱..不同添加剂和青贮密度对紫花苜蓿青贮品质的影响[J].草业学报,2018,27(2):156-162,7.基金项目
国家牧草产业技术体系(CARS-35),公益性行业(农业)科研专项(201303061),天津市农业科技成果转化与推广项目(201404040)和内蒙古自治区科技计划项目(苜蓿混合青贮调制技术研究与示范)资助. （CARS-35）
