海洋科学2025，Vol.49Issue(6)：48-63,16.DOI:10.11759/hykx20241221001
配合饲料替代冰鲜杂鱼对高体鰤幼鱼消化道结构功能、免疫及抗氧化能力的影响
Formulated feed induced structural,functional,immuni-ty-related,and antioxidant capacity changes in the digestive tracts of juvenile greater amberjack(Seriola dumerili)
摘要
Abstract
The effects of replacing chilled trash fish with formulated feed on the digestive tract index and digestive enzyme activities,intestinal tissue structure and bacterial diversity,serum biochemical indices,hepatic im-mune-related gene expression,and antioxidant enzymes in the juvenile greater amberjack(Seriola dumerili)were studied in a 60-day aquaculture experiment.The stomach/body weight of juveniles was significantly lower in the formulated feed group compared to the chilled trash fish group.In contrast,the intestinal/body weight,intestinal trypsin activity,and villi length were markedly greater.These results indicated that the formulated feed reduced digestive capacity in the intestines of the juveniles and also enhanced the abundance of pathogenic bacteria,leading to a decline in intestinal health.Additionally,it suppressed the serum levels of high-density lipoproteins,triglycer-ides,and total cholesterol but improved the immune function by regulating the MyD88 signaling pathway.It also enhanced the serum total antioxidant capacity but reduced the serum and liver malondialdehyde levels,thereby bol-stering the antioxidant capacity.Thus,this study demonstrated the excellent potential of developing a compound feed for juvenile greater amberjack while noting that the formulated feed should be further adjusted and optimized through further research.关键词
高体鰤/饲料替代/酶活/组织结构/肠道菌群/免疫相关基因Key words
Seriola dumerili/feed substitution/digestive tract index/digestive enzymes/serum biochemical indicators/antiox-idant enzymes/immune-related genes分类
农业科技引用本文复制引用
李锦,黄洋,茹笑影,陈培培,杨佳慧,杨桐林,朱琨锋,邹一帆,朱春华..配合饲料替代冰鲜杂鱼对高体鰤幼鱼消化道结构功能、免疫及抗氧化能力的影响[J].海洋科学,2025,49(6):48-63,16.基金项目
广东海洋大学2023年校级第一批"揭榜挂帅"项目(030301022301) （030301022301）
海南省重大科技计划项目(ZDKJ2021011) （ZDKJ2021011）
高体鰤规模化早繁技术研究与人工颗粒饲料高效养殖示范(ZJW-2023010)Guangdong Ocean University 2023 First Batch of University-Level"Unveiling and Commanding"Project,No.030301022301 （ZJW-2023010）
Major Science and Technology Programs in Hainan Province,No.ZDKJ2021011 （）
Research on Scale-up Early Breeding Technology for Seriola dumerili and Demonstration of High-efficiency Breeding with Formulated Feed,No.ZJW-2023010 （）
