Extraction and identification of the chyme proteins in the digestive tract of growing pigs

被引：0
|
作者：
Jianjun Li [1 ]
Bie Tan [1 ,2 ]
Yulong Tang [1 ]
Peng Liao [1 ]
Kang Yao [1 ]
Peng Ji [2 ]
Yulong Yin [1 ]
机构：
[1] National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences
[2] Department of Nutrition, University of California Davis
来源：
Science China(Life Sciences) | 2018年 / 11期
基金：
中国国家自然科学基金;
关键词：
protein profiles; degradation law; proteomics; digestive tract; growing pigs;
D O I：
暂无
中图分类号：
S828 [猪];
学科分类号：
0905 ;
摘要：
This study aimed to explore the rule of degradation of dietary proteins by identifying chyme proteins in different segments of the digestive tract of growing pigs, using proteomics techniques. Six growing pigs were fed a corn-soybean meal-based diet for 7 days. The feedstuff and chyme proteins were separately extracted and separated with SDS-PAGE. 2 D LCMS/MS combined with protein database searching identified 1,513 proteins in different segments of the gastrointestinal tract, the number of identified exogenous proteins gradually decline from the stomach to colon, with large amounts in the duodenum to the large intestine.More corn proteins than soybean proteins were identified both in the feedstuff and chyme, and these were significantly decreased after digestion in the stomach. More membrane proteins than non-membrane proteins were identified in whole digestive tract.These results regarding the profiles of chyme proteins in different segments of the gastrointestinal tract would provide useful information for optimizing feed formula in pigs.
引用
收藏
页码：1396 / 1406
页数：11
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