研究论文 RESEARCH PAPER

白藜芦醇对红罗非鱼肠道组织学和炎症因子含量的影响

  • 施羽露 ,
  • 杨晓曦 ,
  • 郑尧 ,
  • 裘丽萍 ,
  • 胡庚东 ,
  • 邴旭文 ,
  • 陈家长
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  • 1. 南京农业大学无锡渔业学院, 无锡 214081;
    2. 中国水产科学研究院淡水渔业研究中心/农业农村部长江下游渔业生态环境监测中心/农业农村部水产品质量安全环境因子风险评估实验室, 无锡 214081
施羽露(1997-),女,江苏南通人,硕士研究生,研究方向为渔业生态环境监测与保护。E-mail:1175538146@qq.com

收稿日期: 2021-06-17

  网络出版日期: 2022-01-18

基金资助

江苏省自然科学基金项目(BK20190153)

Effects of Resveratrol on Intestinal Histology and Content of Inflammatory Factors in Red Tilapia (Oreochromis mossambicus♀×O. niloticus ♂)

  • SHI Yulu ,
  • YANG Xiaoxi ,
  • ZHENG Yao ,
  • QIU Liping ,
  • HU Gengdong ,
  • BING Xuwen ,
  • CHENG Jiazhang
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  • 1. Wuxi Fishery College, Nanjing Agricultural University, Wuxi 214081, China;
    2. Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences/Fishery Eco-Environment Monitoring Center of Lower Reaches of Yangtze River, Ministry of Agriculture/Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Environmental Factors, Ministry of Agriculture, Wuxi 214081, China

Received date: 2021-06-17

  Online published: 2022-01-18

摘要

本试验旨在探究饲料中添加白藜芦醇(Res)对高脂摄食红罗非鱼生长性能、腹脂沉积、肠道组织结构及炎症因子含量的影响。选用红罗非鱼360尾,设置8%脂肪(A组)、10%脂肪(B组)、10%脂肪+Res(C组)以及10%脂肪+Res+抑制剂EX527(D组)4个组,每组3个重复,每个重复30尾,试验期为63 d。分别在第3、6、9周测定末体重,并采集中肠组织、肠道内容物和血清,测定炎症因子及脂多糖(LPS)含量。结果表明:与A组相比,B组体重、增重率和特定生长率显著升高(P<0.05),且第3、6周腹脂率显著升高(P<0.05),第9周中肠组织白细胞介素-1β(IL-1β)和肿瘤坏死因子-α(TNF-α)含量显著升高(P<0.05),中肠组织转化生长因子-β(TGF-β)含量显著降低(P<0.05);血清LPS含量显著升高(P<0.05),肠道内容物LPS含量随时间呈上升趋势。与B组相比,C组体重、增重率、特定生长率、饲料系数显著降低(P<0.05);血清LPS含量显著降低(P<0.05),且肠道内容物LPS含量随时间呈下降趋势;第9周中肠组织IL-1β、白细胞介素-6(IL-6)和TNF-α含量显著降低(P<0.05),TGF-β含量显著升高(P<0.05)。B组肠道环状皱襞均存在破损现象,C组肠道杯状细胞较B组和D组有所增加。综上所述,添加Res可通过降低LPS含量、提高杯状细胞数量缓解因高脂饲料导致的腹腔脂肪过度沉积、肠道炎症及组织病变,以调控鱼生长,有效保护肠道健康。

本文引用格式

施羽露 , 杨晓曦 , 郑尧 , 裘丽萍 , 胡庚东 , 邴旭文 , 陈家长 . 白藜芦醇对红罗非鱼肠道组织学和炎症因子含量的影响[J]. 动物营养学报, 2022 , 34(1) : 589 -599 . DOI: 10.3969/j.issn.1006-267x.2022.01.054

Abstract

This experiment aimed to explore the effects of dietary resveratrol (Res) on the growth performance, abdominal fat deposition, intestinal tissue structure and inflammatory factor content of red tilapia (Oreochromis mossambicus ♀×O. niloticus ♂) fed with high fat. A total of 360 red tilapia were selected and divided into 4 groups:8% fat (group A), 10% fat (group B), 10% fat +Res (group C) and 10% fat+Res+inhibitor EX527 (group D). There were 3 repetitions in each group, with 30 fish in each repetition. The experimental period was 63 days. The body weight was measured at the end of weeks 3, 6 and 9, and the midgut tissues, intestinal contents and serum were collected to determine the contents of inflammatory factors and lipopolysaccharide (LPS). The results showed as follows:the body weight, weight gain rate and specific growth rate in group B were significantly higher than those in group A (P<0.05), the abdominal fat percentage was significantly increased at week 3 and 6 (P<0.05), and the contents of interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α) in midgut tissue were significantly increased at week 9 (P<0.05). The content of transforming growth factor-β (TGF-β) in midgut tissue was significantly decreased (P<0.05), the content of LPS in serum was decreased significantly (P<0.05), and the content of LPS in intestinal contents was increased with time. Compared with group B, the body weight, weight gain rate, specific growth rate and feed conversion ratio in group C were significantly decreased (P<0.05). LPS content in serum was significantly decreased (P<0.05), and LPS content in intestinal contents was decreased with time. At week 9, the contents of IL-1β, interleukin-6 (IL-6) and TNF-α in midgut tissue were decreased significantly (P<0.05), while the content of anti-inflammatory factor TGF-β in midgut tissue was significantly increased (P<0.05). The intestinal ring folds in group B were damaged, and the intestinal goblet cells in group C were higher than those in group B and group C. In conclusion, adding Res can reduce LPS content and increase goblet cell number to alleviate excessive deposition of abdominal fat, intestinal inflammation and tissue lesions caused by high fat diet, so as to regulate the growth of fish and effectively protect intestinal health.

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