过瘤胃保护性亮氨酸稳定性研究  

Study on the stability of rumen-protected leuine

作　　者：桑丹[1] 郭俊清[1] 孙海洲[2] 

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

出　　处：《中国饲料》2009年第20期41-42,共2页China Feed

基　　金：国家自然科学基金(30560106);内蒙古科技创新基金;现代农业技术体系-国家绒毛用羊技术体系

摘　　要：本研究以绵羊为供体动物,采用对pH值敏感的包被材料羧甲基纤维素钠对亮氨酸进行包埋处理,进行人工唾液消化试验、尼龙袋法与十二指肠液消化试验,检验该包被亮氨酸在瘤胃中的稳定性以及在十二指肠中的消化率。经人工唾液、瘤胃尼龙袋与十二指肠液消化试验,结果表明,包被亮氨酸样品在人工唾液和瘤胃液中较为稳定,亮氨酸在12h的释放率分别为11.01%和34.10%;在十二指肠液中也具有较好的可消化性,亮氨酸在12h的释放率为85.05%。In this study, using the artificial saliva digestion test,the nylon digestion method and the duodenal juice digestion test were conducted to determine the stability of the rumen-protected leucine in the rumen and the digestibility of duodenal pH-sensitive material coated on the sodium carboxymethy cellulose for leucine to process examinations.Test results showed that the rumen-protected leucine samples in artificial saliva and rumen fluid were stable relatively,the release rates of lcueine were 11.01% and 34.10 % at 12 h;in the duodenal juice also has high digestibility,the release rate of leucine was 85.05 % at 12 h.

关 键 词：包被亮氨酸 过瘤胃保护 稳定性 

分 类 号：S816.7[农业科学—饲料科学]