复合免疫制剂对凡纳滨对虾生长及肠道菌群结构影响研究  

Effects of Compound Immunoenhancer on Growth and Intestinal Microflora of White Shrimp Litopenaeus vannamei

作　　者：郝爽[1] 尤宏争[1] 张振国 徐晓丽 罗璋 毕相东[3] HAO Shuang;YOU Hongzheng;ZHANG Zhenguo;XU Xiaoli;LUO Zhang;BI Xiangdong(Tianjin Fishery Research Institute,Tianjin 300221,China;Tianjin Animal Disease Prevention and Control Center,Tianjin 300402,China;Tianjin Agricultural University,Tianjin 300392,China)

机构地区：[1]天津市水产研究所,天津300221 [2]天津市动物疫病预防控制中心,天津300402 [3]天津农学院,天津300392

出　　处：《天津农业科学》2023年第4期43-46,51,共5页Tianjin Agricultural Sciences

基　　金：天津市淡水养殖产业技术体系创新团队(ITTFRS 2021000,ITTFRS2021000-008);天津市科技计划项目(22ZYCGSN00050);甘肃省科技计划项目(21CX6NP223);天津市科技计划项目(22ZYCGSN00310)。

摘　　要：为探究复合免疫制剂对凡纳滨对虾生长和肠道微生物的影响,在基础饲料中添加0.5%复合免疫制剂为试验组饲喂凡纳滨对虾28 d,以基础饲料为对照组,监测对虾生长情况及肠道菌群变化。结果显示:试验组凡纳滨对虾生长性能与对照组无显著差异(P>0.05),但存活率较对照组显著提高(P<0.05);在门水平上,两组对虾肠道微生物均以拟杆菌门、变形菌门、厚壁菌门、放线菌门为主;在属水平上,试验组弧菌属相对丰度在各采样时间点均低于对照组,黄杆菌属相对丰度在第28天低于对照组。综上,复合免疫制剂能增加有益优势菌群丰度,抑制条件致病菌增殖,改善对虾肠道菌群结构的同时,不会对生长产生负面影响。In order to explore the effects of compound immunoenhancer on the growth and community structure of intestinal microflor of Litopenaeus vannamei,basic feed adding 0.5%compound immunoenhancer was fed to L.vannamei for 28 days,and the control group was fed basic feed,the growth and intestinal microfloras of shrimp were monitored.The results showed that there was no significant difference in the growth performance of L.vannamei compared with the control group(P>0.05),whereas the survival ratewas significantly higher than the control group(P<0.05).At the level of phylum classification,the intestinal microflora of both groups were contained a high proportion of Firmicutes,Bacteroidetes,Proteobacteria and Actinobacteria.At the level of genus classification,the proportion of vibrio in the experim flavobacterium was lower than that of the control group at the 28th day.In conclnson,compound immunoenhancer can increase the proportion of beneficial flora,inhibit the proliferation of conditional pathogenic bacteria,and improve the intestinal flora structure of shrimp without negatively affecting growth.

关 键 词：凡纳滨对虾(Litopenaeus vannamei) 复合免疫制剂 生长 肠道菌群 

分 类 号：S968.22[农业科学—水产养殖]