Effects of Haematococcus pluvialis powder in the diet of golden pompano (Trachinotus ovatus) on the growth performance, pigmentation, hepatic and intestinal health, antioxidant capacity and immunity

IF 3.2 2区农林科学 Q1 FISHERIES

Aquaculture Reports Pub Date : 2025-05-16 DOI:10.1016/j.aqrep.2025.102875

Jieping Liu , Ziqiao Wang , Yongkang Chen , Yucai Guo , Xiaoming Li , Yanmei Li , Peinan Zhang , Xiangyan Hou , Chun Luo , Wei Zhao , Jin Niu

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引用次数: 0

Abstract

Haematococcus pluvialis enriched natural astaxanthin is widely used as a functional additive in the farming industry. The objective of this study was to evaluate the effects of dietary supplementation with H. pluvialis powder on growth performance, pigmentation, hepatic and intestinal morphology, antioxidant capacity, and immunity of golden pompano (Trachinotus ovatus). Six isonitrogenous and isolipidic experimental diets, which were formulated to contain 0 % (D1), 0.02 % (D2), 0.04 % (D3), 0.08 % (D4), 0.16 % (D5), and 0.32 % (D6) H. pluvialis powder, were used in the 54-day feeding trial. T. ovatus fed with 0.16 % H. pluvialis showed the greatest levels of FBW, WGR, SGR, and FI. Additionally, across all treatments, the anal fin in the fish given 0.16 % and 0.32 % H. pluvialis displayed increased yellowness (b*), while the tail fin's redness (a*) was considerably higher in the 0.08 % and 0.16 % H. pluvialis treatments. The hepatic morphology result showed that H. pluvialis didn’t influence the health status of the liver, and the activity of CAT decreased in all H. pluvialis-supplemented groups. Compared to other concentrations, the 0.16 % and 0.32 % H. pluvialis groups increased intestinal villi height and amylase activity. The hepatic gene expression showed that 0.16 % H. pluvialis upregulated the expression of kelch ECH-associated protein 1 (keap1), glutathione peroxidase (gsh-px), proliferator-activated receptor α (pparα), interleukin-10 (il-10), and transforming growth factor β (tgf-β), meanwhile, the mRNA level of complement component 4 (c4), superoxide dismutase (sod), and sterol regulatory element-binding protein 1 (srebp1) increased in the intestine. Overall, dietary supplementation with 0.16 % H. pluvialis could improve growth performance, pigmentation in fins, digestive capacity of the intestine, and gene expression related to antioxidant capacity, immunity, and lipid metabolism in T. ovatus.

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饲料中添加雨红球菌粉对卵形鲳鲹生长性能、色素沉着、肝脏和肠道健康、抗氧化能力和免疫力的影响

雨红球菌富含天然虾青素，是一种广泛应用于农业的功能性添加剂。本试验旨在研究饲粮中添加雨竹粉对卵形鲳鲹生长性能、色素沉着、肝脏和肠道形态、抗氧化能力和免疫力的影响。试验采用6种等氮等脂试验饲粮，分别为0 % （D1）、0.02 % （D2）、0.04 % （D3）、0.08 % （D4）、0.16 % （D5）和0.32 % （D6）。投喂0.16 %的雨竹黄颡鱼的FBW、WGR、SGR和FI最高。此外，在所有处理中，0.16 %和0.32 %的雨洪鱼的肛鳍显示出增加的黄色（b*），而尾鳍的红色（a*）在0.08 %和0.16 %的雨洪鱼处理中显著增加。肝脏形态学分析结果显示，水蛭对肝脏健康状况没有影响，且水蛭补充组的CAT活性均有所下降。与其他浓度相比，0.16 %和0.32 %浓度组的绒毛高度和淀粉酶活性增加。肝脏基因表达结果显示，0.16 %雨芽草上调了kelch - ech相关蛋白1 （keap1）、谷胱甘肽过氧化物酶（gsh-px）、增殖激活受体α (pparα)、白细胞介素-10 （il-10）和转化生长因子β (tgf-β)的表达，同时提高了补体成分4 （c4）、超氧化物歧化酶（sod）和甾醇调节元件结合蛋白1 （srebp1）的mRNA水平。综上所述，饲粮中添加0.16 %的雨鲈可改善卵形鱼的生长性能、鱼鳍色素沉着、肠道消化能力以及与抗氧化能力、免疫力和脂质代谢相关的基因表达。

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来源期刊

Aquaculture Reports Agricultural and Biological Sciences-Animal Science and Zoology

CiteScore

5.90

自引率

8.10%

发文量

469

审稿时长

77 days

期刊介绍： Aquaculture Reports will publish original research papers and reviews documenting outstanding science with a regional context and focus, answering the need for high quality information on novel species, systems and regions in emerging areas of aquaculture research and development, such as integrated multi-trophic aquaculture, urban aquaculture, ornamental, unfed aquaculture, offshore aquaculture and others. Papers having industry research as priority and encompassing product development research or current industry practice are encouraged.