EGCG对热应激蛋鸭肠道结构及十二指肠IgA的影响  

Effects of epigallocatechin gallate on intestinal structure and duodenal Ig A in heat-stressed laying ducks

作　　者：郝晓娜 辛清武[2] 李丽[2] 章琳俐[2] 朱志明[2] 缪中纬[2] 郑嫩珠[2] Hao Xiaona;Xin Qingwu;Li Li;Zhang Linli;Zhu Zhiming;Miao Zhongwei;Zheng Nenzhu(College of Animal Science,Fujian Agriculture and Forestry University(College of Beeology),Fuzhou 350002;Institute of Animal Husbandry and Veterinary Medicine,Fujian Academy of Agricultural Sciences,Fuzhou 350013)

机构地区：[1]福建农林大学动物科学学院(蜂学学院),福州350002 [2]福建省农业科学院畜牧兽医研究所,福州350013

出　　处：《福建畜牧兽医》2022年第4期10-12,16,共4页Fujian Journal of Animal Husbandry and Veterinary medicine

基　　金：福建省自然基金(2020J01348);福建省现代家禽产业技术体系(2019-2022);福建省农科院自由探索科技创新项目(ZYTS2019026);福建省农科院科技创新团队(CXTD2021006-2);福建省“5511”协同创新工程(XTCXGC2021008)资助。

摘　　要：本试验旨在研究热应激条件下添加表没食子儿茶素没食子酸酯(EGCG)对蛋鸭肠道形态结构和十二指肠IgA的影响。试验选用400日龄健康金定蛋鸭240羽,随机分为4组,每组3个重复,每个重复20羽。NT组(温度22~26℃),HS组(温度33~37℃),NT组和HS0组饲喂基础日粮,HS300组和HS600组在基础日粮中分别添加EGCG 300 mg/kg和600 mg/kg。试验共计4周。结果表明:(1)日粮中添加表没食子儿茶素没食子酸酯对热应激蛋鸭的肠道形态结构有所改善,其中十二指肠和空肠结果较好;(2)HS0组十二指肠的黏膜IgA含量极显著降低(P<0.01),HS300组、HS600组可一定程度提高十二指肠的黏膜IgA含量,但与对照组、HS0组相比差异均不显著(P>0.05)。This study was conducted to investigate the effects of epigallocatechin gallate(EGCG) on intestinal morphology and duodenal IgA in laying ducks under heat stress. A total of 240 healthy 400-day-old Jinding laying ducks were randomly divided into four groups, with three replicates in each group and 20 ducks in each replicate. NT group(22~26 ℃), HS group(33~37 ℃), NT group and HS0 group were fed basal diet, HS300 group and HS600 group were added EGCG 300 mg/kg and 600 mg/kg respectively. The experiment lasted for 4 weeks. The results showed that:(1) The addition of epigallocatechin gallate in diet improved the intestinal morphology of heat-stressed laying ducks, and the results of duodenum and jejunum were better;(2) HS0 group significantly reduced the IgA content in duodenal mucosa(P<0.01), HS300 group and HS600 group could increase the mucosal IgA content of duodenum to a certain extent, but there was no significant difference compared with the control group and HS0 group(P>0.05).

关 键 词：蛋鸭 热应激 表没食子儿茶素没食子酸酯(EGCG) 肠道结构 十二指肠IgA 

分 类 号：S834[农业科学—畜牧学]