过瘤胃包被亮氨酸的稳定性检验研究  

Evaluation of Rumen Protected Leucine Availability in the Products

作　　者：郭俊清[1] 孙海洲[2] 桑丹[1] 

机构地区：[1]内蒙古农业大学动物科学与医学学院,内蒙古呼和浩特010018 [2]内蒙古农牧业科学院动物营养研究所,内蒙古呼和浩特010030

出　　处：《畜牧与饲料科学》2009年第3期49-50,共2页Animal Husbandry and Feed Science

基　　金：国家自然科学基金(30560106);现代农业产业技术体系建设专项基金资助--绒毛用羊产业技术体系

摘　　要：采用体外法和半体内法检验过瘤胃保护亮氨酸在绒山羊消化道中的稳定性以及可消化性。将包被亮氨酸(RPLeu)在人工唾液、瘤胃液及十二指肠液中分别培养2,4,8,12,16和24h后测定其释放率。试验结果表明,包被亮氨酸的释放率随培养时间的延长而呈升高趋势;经过8h培养后,在人工唾液、瘤胃液和十二指肠液中RPLeu的释放率分别为10.63%、25.82%和85.27%。由此表明,RPLeu在人工唾液和瘤胃液中有较好的稳定性,在十二指肠液中具有较好的可消化性。In vitro and in Sacco techniques were used to identify the stability of the rumen-protected Leucine （RPLeu） in the artificial saliva and rumen of the Inner Mongolia White Cashmere Goats （IMWCG）, and its digestibility in the duodenum. The coated amino acids were incubated for 2,4,8,12,16 and 24 h in the artificial saliva, rumen and duodenum. Results showed that： Release rate of the RPLeu was improved with the cluture time;Release rate of the RPLeu in saliva ,rumen and duodenum were10.63 % ,25.82 % and 85.27 % after 8 hour.It showed that the tureen-protected Leucine had a good stability in saliva and rumen ,and it had a good digestibility in the duodenum.

关 键 词：过瘤胃保护性氨基酸 亮氨酸 稳定性 

分 类 号：S827.915[农业科学—畜牧学]