摘要
为研究鸭茅原料的特性以及鸭茅青贮饲料的发酵品质和养分含量,以结实期新鲜或晾晒鸭茅为原料,分别设对照、添加甲酸(6 mL/kg)或蔗糖(2%)处理,袋装密封青贮360 d后取样进行分析。结果表明,经过晾晒之后,鸭茅青贮饲料的水分、乳酸含量极显著下降(P<0.01),pH值和氨态氮含量显著减少(P<0.05);添加蔗糖或甲酸能够改善鸭茅青贮饲料的发酵品质,极显著降低pH值、增加乳酸的生成量(P<0.01)。晾晒或添加剂处理对鸭茅青贮饲料常规养分的影响不显著,但硝酸盐含量显著降低。
The common orchard grass at seed setting stage of fresh or air-dried was used as raw materials,its characteristics of silage fermentation quality and nutrient content were studied.The fresh or air-dried common orchard grass at seeding stage were bagged ensilaged as the CK,6 mL/kg formic acid and sucrose（2%） treatments,and sampled and analyzed after 360 days storage.The results indicated that the air-drying decreased the common orchard grass silage moisture content and lactic acid content significantly（P0.01）,and the pH and ammonia nitrogen content reduced（P0.05）.The fermentation quality of common orchard grass silages were improved with additives of sucrose or formic acid with lower pH and higher lactic acid content（P0.01）.The effects of air-drying or additive on the proximate nutrients were not obvious,but nitrate content reduced significantly after ensiling.
出处
《山西农业科学》
2011年第10期1119-1121,共3页
Journal of Shanxi Agricultural Sciences
基金
山西省科技攻关项目(20100311052)
"十二五"国家科技支撑计划项目(2011BAD17B02)
国家牧草产业技术体系建设专项
国家农业科技成果转化资金项目(2009GB2A300043)
关键词
鸭茅
青贮
添加剂
晾晒
common orchard grass
silage
additives
air-dried
