Effects of Stocking Density on the Growth Performance, Physiological Parameters, Redox Status and Lipid Metabolism of Micropterus salmoides in Integrated Rice-Fish Farming Systems
文献类型： 外文期刊
作者： Jia, Rui 1 ; Wang, Long 3 ; Hou, Yiran 1 ; Feng, Wenrong 1 ; Li, Bing 1 ; Zhu, Jian 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Integrated Rice Fish Farming Ecol, Minist Agr & Rural Affairs, Wuxi 214081, Jiangsu, Peoples R China
2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Int Joint Res Lab Fish Immunopharmacol, Wuxi 214081, Jiangsu, Peoples R China
3.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi 214081, Jiangsu, Peoples R China
关键词： oxidative stress; physiological stress response; transcriptome; PPAR signaling pathway
期刊名称：ANTIOXIDANTS （ 影响因子：7.675； 五年影响因子：7.886 ）
ISSN：
年卷期： 2022 年 11 卷 7 期
页码：
收录情况： SCI
摘要： Stocking density has been identified as one of the main factors affecting fish growth, welfare and behavior. However, few studies have focused on the effects of stocking density on fish health in integrated rice-fish farming systems. Thus, the aim of this study was to evaluate the effects of different stocking densities on the growth performance, physiological parameters, redox status and lipid metabolism of Micropterus salmoides in an integrated rice-fish farming system. The fish were reared at three densities: low density (LD, 40 g/m(3)), medium density (MD, 80 g/m(3)) and high density (HD, 120 g/m(3)) for 90 days. At the end of the experiment, fish reared in the MD and HD groups showed lower growth performance than those from the LD group. The HD treatment significantly altered the physiological parameters, including glucose and lactate. Meanwhile, the HD treatment induced oxidative stress and lipid peroxidation after 90 days of farming. Furthermore, transcriptomic analysis revealed that HD treatment led to abnormal lipid metabolism. Interestingly, we found the suppression of three key pathways related to lipid metabolism, including the PPAR, insulin and adipocytokine signaling pathways, in the HD group. Overall, our data indicated that the HD treatment inhibited growth and caused physiological responses, oxidative stress and abnormal hepatic lipid metabolism in M. salmoides in an integrated rice-fish farming system.
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