不同玉米品种青贮饲料营养成分比较分析  

The Comparison of the Chemical Characteristics and Nutritive Value of Green Corn Stalk Silage with Different variety

作　　者：余汝华[1] 莫放[1] 赵丽华[1] 张晓明[1] 陈瑶[1] 

机构地区：[1]中国农业大学动物营养学国家重点实验室,北京100094

出　　处：《中国农学通报》2007年第8期17-20,共4页Chinese Agricultural Science Bulletin

基　　金：国家"十五"科技攻关计划项目"饲料资源开发与产业化利用关键技术研究"(2004BA514A11-04)"玉米秸秆产业化利用技术研究"。

摘　　要：【研究目的】为研究不同玉米品种间的青贮饲料营养物质的差异;【方法】选取104d收刈的青玉米秸秆和饲用玉米调制青贮以研究不同品种玉米青秸秆对青贮饲料营养成分的影响,60d后分析测定青贮饲料营养成分;【结果】结果表明,玉米品种明显影响青贮饲料的氨态氮、乳酸、CP、NDF和ADF含量,青玉米秸秆(粮食用)青贮饲料的乳酸、丁酸含量和ADF含量没有明显差异(p>0.05),饲用玉米青贮的乳酸、丁酸含量显著高于青玉米秸秆的青贮饲料(p<0.05);【结论】不同玉米品种的青贮原料对青贮发酵产物及青贮饲料营养物质含量有明显的影响。[OBJECTIVE]The influence of variety on nutritive composition of silage was determined for different silage.[METHOD]The corn stalk were harvested and ensiled at the 104th day of grow. The chemical characteristics and nutritive value of silage was evaluated. [RESULTS]Although the pH and ammonia concentrations of silage with corn stalk were effect with different treatments. Variety did not have a large effect on lactic acid and ADF content of silage with corn stalk. In this study the lactic acid concentrations and the digestibility of organ matter in vitro of corn silage were higher than that the silage of corn stalks. [CONCLUSION]Results of trials indicate that the nutritive value of silage were significant diffcrent with different variety.

关 键 词：青贮饲料 玉米秸秆 乳酸 氨态氮 

分 类 号：S816.5[农业科学—饲料科学]