Promotion of improved intestinal barrier health by soybean-derived bioactive peptides in Chinese mitten crab (Eriocheir sinensis) fed a low fishmeal diet
文献类型： 外文期刊
作者： Jiang, Kemeng 1 ; Liu, Bo 1 ; Sun, Cunxin 1 ; Zhou, Qunlan 1 ; Zheng, Xiaochuan 1 ; Liu, Mingyang 1 ; Xu, Gangchun 1 ; Jin, Wu 1 ; Tian, Hongyan 4 ; Hu, He 5 ;
作者机构： 1.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi 214081, Peoples R China
2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Freshwater Fisheries & Germplasm Resources, Minist Agr & Rural Affairs, Wuxi 214081, Peoples R China
3.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Aquat Anim Nutr & Hlth, Wuxi 211700, Peoples R China
4.Yancheng Inst Technol, Sch Marine & Bioengn, Yancheng 224000, Peoples R China
5.Jiangsu FIELD Technol Co Ltd, Huaian 214081, Peoples R China
关键词： Chinese mitten crab; Soybean-derived bioactive peptide; Fishmeal replacement; Antioxidant stress; Intestinal health
期刊名称：BRITISH JOURNAL OF NUTRITION （ 影响因子：3.6； 五年影响因子：4.0 ）
ISSN： 0007-1145
年卷期： 2023 年
页码：
收录情况： SCI
摘要： To alleviate the growth inhibition, and intestinal damage of Chinese mitten crab (Eriocheir sinensis) induced by low fishmeal diets (LF), an 8-week feeding trial was conducted to evaluate the addition of dietary soybean-derived bioactive peptides (SBP) in LF diets on the regulation of growth, digestion and intestinal health. The crabs were fed isonitrogenous and isoenergetic conventional diet and LF diets (10 % fishmeal replaced by soybean meal, LF) supplemented with 0, 1 %, 2 %, 4 % and 6 % SBP, respectively. The results showed that LF diet inhibited growth while inclusion of SBP quadratically remitted the growth inhibition induced by LF. For digestive function, increasing addition level of SBP quadratically improved the alpha-amylase and trypsin activities. For antioxidant function, LF group significantly increased the malondialdehyde content, while SBP linearly decreased the malondialdehyde level and cubically increased the anti-superoxide anion activity and total antioxidant capacity level. For intestinal health, the peritrophic membrane (PM) almost completely separated from the inner wall of the intestinal lumen, the epithelial cells reduced, the muscularis became thinner and the apoptotic signals increased in LF group; with SBP addition, the intestinal morphology was improved, with the PM adhering to the inner wall of the intestinal lumen, an increase in the number of epithelial cells and an increase in the thickness of the muscularis. Additionally, there was a decrease in apoptotic signals. Dietary SBP also increased the expression of PT and Crustin1 quadratically and decreased the expression of ALF1 linearly, ALF3 and ILF2 quadratically.
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