瘤胃微生物体外降解不同来源肽的规律研究  

Degradation Patterns of Different Peptides in the Culture by Rumen Microorganisms

作　　者：程茂基[1] 卢德勋[2] 王洪荣[2] 王岗[2] 赵秀英[2] 张海鹰[2] 郭文华[2] 

机构地区：[1]安徽农业大学畜牧水产学院,合肥230036 [2]内蒙古畜牧科学院,呼和浩特010018

出　　处：《安徽农业大学学报》2004年第2期227-231,共5页Journal of Anhui Agricultural University

基　　金：国家自然科学基金项目(39860059);安徽省优秀青年基金项目(皖科金字2002 02)资助。

摘　　要：通过体外试验分别研究36、72、144、216、324和450mg·L-16个水平的大豆肽、玉米肽和瘤胃液肽在瘤胃微生物培养液中的降解规律。结果表明,随着培养时间的延长,3种肽的降解量均显著增加(P<0 01或P<0 05),而降解速率却显著降低(P<0 01);当培养液中肽含量增加时,3种肽的降解量显著增加(P<0 01或P<0 05),降解速率显著提高(P<0 01或P<0 05),而降解率却显著下降(P<0 05)。对于不同肽源来说,培养初期瘤胃液肽的降解量以及降解速率显著高于玉米肽,培养后期几种来源肽的降解量以及降解速率差异不显著。因此,肽的来源和结构不同,其降解规律也有差异。The degradation patterns of different peptides in the culture by rumen microorganisms were studied.The results showed that the amount of peptide degradation was increased significantly (P<0.01 or P<0.05) with the incubation time extended,but the rates of peptide degradation were decreased significantly (P<0.01). When peptide concentration was increased in the incubation , the amount of peptide degradation and rates of peptide degradation were increased significantly (P<0.01 or P<0.05),but the proportion of peptide degradation was decreased significantly (P<0.05).The amount,proportion and rates of rumen peptide degradation were higher than those of soybean protein peptide (P<0.05) and corn protein peptide (P<0.01).The results suggested that the rate of peptide degradation might be different with different proteins.

关 键 词：肽 降解规律 瘤胃微生物 

分 类 号：S826.5[农业科学—畜牧学]