草业学报Issue(4)：104-113,10.DOI:10.11686/cyxb20150412
紫花苜蓿和裸燕麦混贮发酵品质和营养成分分析
Quality of mixed naked oats (Avena nuda)and alfalfa (Medicago sativa)silage
摘要
Abstract
Using sun-dried or fresh alfalfa and naked oats as materials,five silages,including alfalfa silage,na-ked oats silage,three mix silage,(alfalfa∶naked oats =1∶1,alfalfa∶naked oats =1 ∶2 and alfalfa∶naked oats =2 ∶1 ),were prepared.After 60 days ensiling,the sensory score,fermentation quality and nutrition composition of silages were evaluated.The results revealed that silage made of fresh alfalfa showed a common performance in the sensory score and V-Score and Kaiser-Score evaluation system,while both silage made of sun-dried materials and mixed silage had a improved silage score.Sun-drying and mixing process had effect on silage quality,such as decreasing pH value,acetic acid (AA),propionic acid (PA),butyrate acid (BA)and ammonia nitrogen/total nitrogen (AN/TN)(P <0.01 or P <0.05)content of silages,significantly increasing lactate (LA)content (P <0.01or P <0.05)of silages.Among which,mixed silage of alfalfa and naked oats with a ratio of 2∶1 showed a biggest increasing and decreasing describe above.The sun-drying process had a significantly effect on the dry matter (DM),water-soluble carbohydrate (WSC)and crude ash (Ash)content of silage,while had no effect on remaining nutrients.Notably,mixing process had significant effects on most of fermentative indexes,such as the content of crude protein (CP),water-soluble carbohydrate (WSC),neu-tral detergent fiber (NDF)(P <0.05 or P <0.01),whereas had no effect on other nutrient indexes.In conclu-sion,the interaction of sun-drying process to silage materials and mixed ratio can improve silage quality,while had no effect on nutrient composition of silages.According to the sensory score,fermentation quality,and nu-trient content,the mixed and sun-dried materials can produce better silages than sole and fresh material,and silage made of naked oats and alfalfa with a ration of 2∶1 was the best.关键词
紫花苜蓿/裸燕麦/混合青贮/发酵品质/营养成分Key words
alfalfa (Medicago sativa )/naked oats (Avena nuda )/mixed silage/fermentation quality/nutrition composition引用本文复制引用
葛剑,杨翠军,杨志敏,白雪梅,赵海香,刘贵河..紫花苜蓿和裸燕麦混贮发酵品质和营养成分分析[J].草业学报,2015,(4):104-113,10.基金项目
公益性行业（农业）科研专项经费（201203024），河北省教育厅青年基金项目（2011231）和河北北方学院创新团队项目（CXTD1305）资助。 （）
