Open AccessDietary taurine impacts the growth, amino acid profile and resistance against heat stress of tiger puffer ( Takifugu rubripes )
Author(s) -
Shi Lidong,
Zhao Yue,
Zhou Jing,
Zhai Haojie,
Wei Libo,
Liu Zexuan,
Wang Wei,
Jiang Zhiqiang,
Ren Tongjun,
Han Yuzhe
Publication year - 2020
Publication title -
aquaculture nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 79
eISSN - 1365-2095
pISSN - 1353-5773
DOI - 10.1111/anu.13120
Subject(s) - takifugu rubripes , taurine , biology , triglyceride , zoology , medicine , endocrinology , juvenile , amino acid , food science , fish <actinopterygii> , biochemistry , fishery , ecology , cholesterol
A 56‐day feeding trail was conducted to evaluate the effects of taurine (Tau) supplementation on growth performance, amino acid profile and heat stress resistance capacity in juvenile Takifugu rubripes (initial body weight: 32.28 ± 0.20 g). Tiger puffer were distributed into five groups and each received one of the following diets: each diet was supplemented with 0 (T1), 5 (T2), 10 (T3), 20 (T4) or 50 (T5) g Tau/kg, respectively. Growth performances were significantly ameliorated with fed diet T3 ( p < .05). The Tau content of muscle increased significantly as dietary Tau increased ( p < .05). Compared to the control group, fish fed diets T4 and T5 showed significantly higher concentration of triglyceride and urea, respectively ( p < .05), while taurine transporter (TauT) gene and IGF‐1 gene expression increased significantly in fish fed diets T3 and T4, respectively ( p < .05). After acute heat stress, HSP70 gene expression levels were significantly greater in the livers and spleens of T. rubripes ( p < .05) fed diet supplemented with Tau. Levels of complement C4 were highest in fish fed 10 g/kg Tau ( p < .05). These data suggested that dietary supplemented with taurine indicated positive effects on growth performances, amino acid profile and resistance against heat stress for T. rubripes .