The influence of dietary arachidonic acid on growth, fatty acid profile and sex steroid hormones of F-2 generation Chinese sturgeon (Acipenser sinensis)

文献类型： 外文期刊

第一作者： Wu, Jinping

作者： Wu, Jinping;Yang, Daiqin;Yu, Ting;Xu, Qiaoqing;Zhu, Jianqiang;Wu, Jinping;Du, Hao;Luo, Jiang;Wei, Qiwei

作者机构：

关键词： Arachidonic acid; Arachidonic acid metabolites; Steroidogenesis-related gene expression; Sex steroid hormones; Chinese sturgeon

期刊名称：AQUACULTURE REPORTS （ 影响因子：3.216； 五年影响因子：3.812 ）

ISSN： 2352-5134

年卷期： 2021 年 21 卷

页码：

收录情况： SCI

摘要： An 22-week feeding trial was performed to evaluate the effects of dietary arachidonic acid (ARA) on the growth performance, tissue fatty acid, ARA metabolites, sex steroid hormones and steroidogenesis-related gene expression in F-2 generation Chinese sturgeon. Four diets with different ARA levels (0.0 %, 0.5 %, 1.0 % and 2.0 % in the diets) were formulated. The results showed that dietary ARA did not affect final body weight (FBW), weight gain rate (WGR), feed conversion ratio (FCR), survival rate (SR), hepatosomatic index (HSI), viscer-osomatic index (VSI), condition factor (CF) and gonadalsomatic index (GSI) (P > 0.05), while tissue ARA deposition was significantly effected by the dietary ARA (P < 0.05). In the ovary and liver, the metabolites of prostaglandin E-2 (PGE(2)) and 5-hydroxyeicosatetraenoic acid (5-HETE) increased significantly with increasing dietary ARA (P < 0.05). In the muscle, the contents of the two metabolites in the 1.0 % ARA diet were significantly higher than that the 0.0 % and 2.0 % ARA diets (P < 0.05). Significantly decreased liver and ovary estradiol (E2), testosterone (T) levels were found in the 0.0 % ARA diet compared with 2.0 % ARA diet (P < 0.05). In the ovary and liver, the contents of vitellogen (Vtg) increased significantly with increasing dietary ARA (P < 0.05). E-2 and Vtg contents in the serum of fish fed the 1.0 % ARA diet were significantly higher than the 0.0 % ARA diet (P < 0.05). These results indicated that dietary ARA did not affect growth, but ARA levels greater than 1 % in the diets plays vital roles in the ARA deposition, metabolism, steroid regulation and Vtg synthesis in F-2 generation female Chinese sturgeon. The best efficiency was achieved 1 % ARA, based on roles or cost effective, which were beneficial to promote ovary development.

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