Lycopene Alleviates the Adverse Effects of Feeding High-Lipid Diets to Hybrid Grouper (♀Epinephelus fuscoguttatus x♂E. lanceolatus)

被引:1
|
作者
Zhou, Menglong [1 ,2 ]
Liu, Hao [1 ,2 ]
Lu, Baiquan [1 ,2 ]
Li, Biao [1 ,2 ]
Huang, Weibin [1 ,2 ]
Tan, Beiping [1 ,2 ,3 ]
Yang, Yuanzhi [1 ,2 ]
Dong, Xiaohui [1 ,2 ,3 ]
Zhang, Haitao [3 ]
机构
[1] Guangdong Ocean Univ, Coll Fisheries, Lab Aquat Nutr & Feed, Zhanjiang 524088, Peoples R China
[2] Guangdong Engn Technol Res Ctr Aquat Anim Precis N, Zhanjiang 524088, Guangdong, Peoples R China
[3] Minist Agr, Key Lab Aquat Livestock & Poultry Feed Sci & Techn, Zhanjiang 524000, Guangdong, Peoples R China
关键词
LIPOPROTEIN-LIPASE LPL; RNA EXPRESSION LEVELS; HIGH-FAT DIET; METABOLISM-RELATED GENES; ACID SYNTHETASE FAS; OIL-RED-O; GROWTH-PERFORMANCE; BODY-COMPOSITION; IMMUNE-RESPONSES; FISH COMPOSITION;
D O I
10.1155/2023/8814498
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
It has been found that high-lipid diets (HLDs) disrupt lipid metabolism in fish, leading to an excessive accumulation of lipids in various tissues of the fish body. The objective of this study was to investigate if the inclusion of lycopene (LCP) in an HLD may mitigate the adverse consequences of excessive dietary lipid intake in hybrid grouper (male Epinephelus fuscoguttatus x male E. lanceolatus). The experimental design incorporated a control group (L0), which was administered a diet consisting of 42% protein and 16% lipid. The diets for groups L1, L2, and L3 were developed by augmenting the control diet with 100, 200, and 400 mg/kg LCP, respectively. The duration of the trial spanned a period of 42 days. The results of the study showed that the weight gain rate (WGR) and protein efficiency ratio (PER) of the three LCP treatment groups (L1, L2, and L3) tended to increase and then decrease, with a significant increase in WGR and PER in L2 (P <0.05). Visceral somatic index and hepatic somatic index tended to decrease and then increase in all treatment groups, with a significant decrease in L2 (P <0.05). In serum dietary LCP significantly reduced triglyceride (TG), total cholesterol (TC), and low-density lipoprotein (LDL) content and significantly increased high-density lipoprotein (HDL) content (P <0.05). In the liver, dietary LCP reduced TC, TG, and very LDL levels and improved lipoprotein lipase, hepatic lipase, fatty acid (FA) synthetase, and acetyl-CoA carboxylase activities. The number and area of hepatic lipid droplets decreased significantly with increasing LCP content. In the liver, the addition of appropriate levels of LCP significantly upregulated lipoprotein lipase (lpl) and peroxisome proliferator-activated receptor alpha (ppar alpha). In summary, dietary LCP improves growth and reduces lipid deposition in the liver of hybrid grouper by increasing lipolytic metabolism and decreasing FA synthesis. Under the experimental conditions, the fitted curve analysis showed that the recommended LCP additions to the high lipid diet for juvenile hybrid grouper were 200-300 mg/kg.
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页数:10
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