摘要
对稻秸分别与玉米秸、杂交狼尾草和象草的混合青贮进行了研究,并采用乳酸菌(Chikuso-1)添加剂处理探讨其对不同原料混合青贮发酵品质的影响。结果表明:添加乳酸菌的青贮料pH、乳酸(LA)含量和氨态氮/总氮(AN/TN)均极显著优于对照(无添加物,P<0.01),乳酸菌对青贮料的可溶性碳水化合物(WSC)含量、粗蛋白质(CP)含量、中性洗涤纤维(NDF)含量、酸性洗涤纤维(ADF)含量、有机物消化率(IVOMD)的影响差异均不显著;添加乳酸菌的稻秸与玉米秸、杂交狼尾草混合青贮料干物质回收率(DMR)均极显著高于对照(P<0.01),稻秸与象草混合青贮料显著高于对照(P<0.05)。不同混合青贮料的pH、LA含量、AN/TN、WSC含量、CP含量、ADF含量、DMR差异极显著(P<0.01)。稻秸与玉米秸混合青贮料品质最佳,最差的是稻秸与象草混合青贮料。
The effects of lactic acid bacteria on fermentation quality of different mixed materials were studied.Rice straw was mixed with corn stalk,hybrid Pennisetum,respectively.Three mixed materials were ensiled with adding or without adding lactic acid bacteria（0.02g·kg-1 fresh material）.Results showed that the pH,lactic acid（LA） and ammonia nitrogen/total nitrogen（AN/TN） with adding LAB were very significantly excellent than those without adding LAB（P0.01）.There were not significant effect of lactic acid bacteria on water soluble carbohydrates（WSC） content,crude protein（CP） content,neutral detergent fiber（NDF） content,acid detergent fiber（ADF） content,in vitro organic matter digestibility（IVOMD）.Dry matter recovery（DMR） of the mixed silage with rice straw and corn stalk,rice straw and hybrid Pennisetum with adding LAB were very significantly increased than those without adding lactic acid bacteria（P0.01）,the mixed silage with rice straw and elephant grass with adding LAB were significantly increased than those without adding lactic acid bacteria（P0.05）.There were very significant differences in pH,LA content,AN/TN,WSC content,CP content,ADF content,DMR among different mixed silage（P0.01）.Silage quality of the mixed silage of rice straw with corn stalk was the most excellent,and the worst one was the mixed silage of rice straw with elephant grass.
出处
《中国草地学报》
CSCD
北大核心
2012年第2期93-98,共6页
Chinese Journal of Grassland
基金
江苏省科技支撑计划(BE2011400)
江苏省自主创新资金[cx(10)225]
关键词
混合青贮
稻秸
营养品质
乳酸菌
Mixed silage
Rice straw
Nutritive value
Lactic acid bacteria
