Fattening with formulated diets improves the immune response and lipid accumulation in the gonads of male Chinese mitten crab ( Eriocheir sinensis)

文献类型： 外文期刊

第一作者： Chen, Jianxiang

作者： Chen, Jianxiang;Xu, Pao;Xu, Gangchun;Xue, Miaomiao;Wang, Qingyong;He, Jiyan;He, Changchang;Kong, Changxin;Li, Xiaowei;Wang, Hang;Shen, Huaishun;Li, Hongxia;Song, Changyou;Chen, Jianxiang;Xu, Pao;Xu, Gangchun;Shen, Huaishun;Li, Hongxia;Song, Changyou;Song, Changyou

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关键词： Eriocheir sinensis; Formulated feed fattening; Gonads; Lipid accumulation; Phosphatidylcholine

期刊名称：AQUACULTURE （ 影响因子：3.9； 五年影响因子：4.4 ）

ISSN： 0044-8486

年卷期： 2025 年 597 卷

页码：

收录情况： SCI

摘要： To improve the yield and quality of Chinese mitten crabs and ensure environmental sustainability, it has become an inevitable trend to replace iced trash fish (Trash) with formulated feeds (Feed) during farming. However, the effect of feeds on fattening male crabs remains unclear. Hence, fattening experiment were conducted with immature male crabs with initial body weight of 153.65 +/- 12.23 g, and the effects of formulated feed on fattening were analyzed with metabolomic and lipidomic approach. The results suggested no statistical difference in the growth and development of male crabs fattened with the feeds. The diet potentiated the immune response and repressed apoptosis in the gonads during fattening. Cholesterol accumulation and augmented fatty acid catabolism in the gonads were observed in the Feed group. Additionally, feed fattening diminished protein deposition. Metabolomic analysis indicated that feed fattening promoted lysine degradation and purine metabolism in the gonads. A further lipidomic study discovered that feed fattening mostly contributed to the boosting of phosphatidylcholines (PCs) that contain unsaturated fatty acids via the glycerophospholipid pathway compared to the trash fish group. Correlation analysis showed that enhancing gonadal lysine, purine metabolism and PCs could improve immune response and lipid metabolism. In summarize, the formulated diets effectively substituted trash fish for fattening and were superior in immunological promotion and lipid accumulation. Our results provide novel perspectives into the formulation design and application of the formulated feeds in the process of fattening.

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