不同加工方式苜蓿干草在肉羊瘤胃内的降解及对消化代谢的影响  

Effects of Different Processed Alfalfa Hay on Rumen Nutrients Degradation Rate and Digestion and Metabolism in Sheep

作　　者：胡雅洁[1] 贾志海[1] 王润莲[1] 涂吉华[1] 孙江涛[1] 朱晓萍[1] 

机构地区：[1]中国农业大学动物科技学院,北京100094

出　　处：《中国畜牧杂志》2007年第17期36-38,共3页Chinese Journal of Animal Science

基　　金：国家"863"课题高技术发展计划资助项目(2002AA241181)

摘　　要：选用12只安装有永久性瘤胃瘘管的1.5岁杂交一代(无角陶赛特×小尾寒羊)肉用羯羊,随机分成3组,研究日粮中不同加工方式(整株、颗粒、草粉)苜蓿干草在瘤胃内的降解及其对肉羊消化代谢的影响。试验结果表明:苜蓿干草经粉碎及颗粒处理后,DM、CP、NDF在瘤胃内的降解率较整株组有显著提高(P<0.05),但ADF降解率未有明显变化(P>0.05)。不同加工方式(整株、颗粒、草粉)苜蓿干草对DM、OM、NDF、ADF表观消化率没有影响(P>0.05),但加工成颗粒及粉料使氮的利用率显著提高(P<0.05)。3种不同加工方式下DM、OM、NDF、ADF表观消化率分别高达71.74%～72.18%、73.67%～74.22%、66.69%～68.48%、45.64%～52.41%。The effects of different processed alfalfa hay on degradation rate of nutrient digestion and metabolism in sheep were researched in this study. Twelve crossbred（Small Tail Han-sheep × Poll Dorset） wethers were randomly allotted into 3 treatments. The results showed that with the increase of degradation time, the degradation rates of each nutrients in rumen were increased also; the alfalfa pellet and alfalfa meal had higher（P 〈 0.05） degradation rates of DM, CP and NDF than whole hay except for the degradation rate of ADF. No significant effects （P 〉 0.05） of different processed alfalfa hay were found on the apparent digestible rates of DM, OM, NDF and ADF. The apparent digestion rates of DM, OM, NDF, and ADF were 71.74%-72.18% .73.67%-74.22% .66.69%-68.48%. 45.64%-52.41%.

关 键 词：苜蓿 加工方式 整株 颗粒 草粉 肉羊 

分 类 号：S826.5[农业科学—畜牧学]