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Lipid metabolism responses of common carp (Cyprinus carpio L.) to mulberry leaf meal in diet

文献类型： 外文期刊

作者： Hou, Qirui 1 ; Thidza, Innocent Zuzeni 2 ; Miao, Linghong 3 ; Dong, Zaijie 2 ; Pan, Wenjing 2 ; Zhu, Wenbin 3 ; Wang, 1 ;

作者机构： 1.Jiangsu Univ Sci & Technol, Sch Biotechnol, 2 Mengxi Rd, Zhenjiang 212003, Jiangsu, Peoples R China

2.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi, Jiangsu, Peoples R China

3.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Minist Agr & Rural Affairs, Key Lab Freshwater Fisheries & Germplasm Resource, Wuxi, Jiangsu, Peoples R China

关键词： common carp; gene expression; lipid metabolism; liver lipid content; mulberry leaf meal

期刊名称：AQUACULTURE RESEARCH （ 影响因子：2.082； 五年影响因子：2.415 ）

ISSN： 1355-557X

年卷期： 2020 年 51 卷 2 期

页码：

收录情况： SCI

摘要： This study investigated the lipid metabolism responses of common carp (Cyprinus carpio L.) to mulberry leaf meal (MLM) replacing of some fish meal in diet. Six iso-nitrogenous and iso-energetic diets containing different levels of MLM (0%, 6.3%, 12.6%, 18.9%, 25.2% and 31.5%) were prepared and fed to common carps in tanks for 56 days. Analysis showed that serum total protein, albumin contents and glutamic-pyruvic transaminase, glutamic oxalacetic transaminase activities were not significantly different among treatments, blood glucose, cholesterol, high-density lipoprotein and low-density lipoprotein but triglyceride concentration depicted a declining trend in MLM supplementation groups compared with control. Liver and muscle lipid content decreased with increased supplementation of MLM in the diet. Hepatic lpl showed an up-regulated trend in the MLM groups, apo-a1 was up-regulated in common carp fed 31.5% MLM diet, ppar alpha was up-regulated in 18.9% and 25.2% MLM groups, while apo-a4, ppar beta and ppar gamma were down-regulated in all the MLM-treated groups compared with control, fabp1 was down-regulated in fish fed high-MLM diets (>= 25.2%). The results revealed that half of fish meal in common carp diet could be replaced by MLM with no hepatotoxicity; MLM promoted the reversal of cholesterol transport thereby reducing the cholesterol in blood; MLM elevated the ability of fatty acid oxidation of the common carp, but did not activated the activity of lipoprotein lipase fully, and the suppressed transportation of fatty acid affected the degradation of triglyceride in blood together; MLM reduced liver lipid contents might through suppressing the isolation and proliferation of adipocytes.

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