全收粪法和AIA指示剂法测定奶牛日粮有机物消化率差异比较  

The Apparent Digestibility of Organic Matter Determined by Direct and AIA Marker Methods for Dairy Cows

作　　者：曹锦萍[1] 张晓雷[1] 翟英丽[1] 莫放[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,北京100193

出　　处：《中国草食动物》2008年第6期18-20,共3页China Herbivores

基　　金："十一五"国家科技支撑计划项目子课题(2006BAD12B04-02A)

摘　　要：采用奶牛消化代谢试验测定6头奶牛日粮中有机物消化率,对比分析用全收粪法和AIA法测定的有机物消化率差异。结果表明,用全收粪法、AIA法测定的日粮有机物表观消化率分别为68.2%、73.9%,AIA法测定值显著高于全收粪法(P<0.05),内源指示剂AIA回收率为110.9%。The objective of the experiment was to evaluate the efficacy of AIA to predict organic matter digestibility （OMD） of diets. Six dairy cows in the experiment were assigned to feed silage, corn stalk, concentrate diets. The OMD（73. 9%） evaluated with the AIA method were significantly higher than the OMD （68. 2%） determined with the direct collection feces （P〈0.05）. The fecal recovery of AIA was 110.9%. In conclusion, there would be a higher digestibility measured with AIA as a marker,comparing with the direct collection feces method in dairy cow.

关 键 词：全收粪 AIA 有机物消化率 回收率 

分 类 号：S823.1[农业科学—畜牧学]