Dietary fulvic acid improves immune, digestive and antioxidant parameters in juvenile white-leg shrimp (Litopenaeus vannamei) in a super-intensive system

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-08-05 DOI:10.1016/j.cbpb.2024.111011

Younes Abdollahzadeh , Mohammad Mazandarani , Seyed Hossein Hoseinifar , Thora Lieke , Hien Van Doan , Sajjad Pourmozaffar

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Abstract

In the current study, the effects of dietary fulvic acid supplementation at levels of 0.5, 1 and 2% were examined in white-leg shrimp, Litopenaeus vannamei. A significant increase in the weight of the shrimp was observed in the group treated with 2% fulvic acid in comparison to the control group. This may have been associated with an increased digestive efficiency, with the food conversion ratio reducing from 2.4 to 1.9, and increased hepatopancreatic amylase, protease, and lipase enzyme activities. Enhanced activity of hemolymph superoxide dismutase was suggestive of an enhanced immune capacity, while hemolymph cell count increased by 16.4 and 13.6% in shrimp receiving diets supplemented with 1 and 2% fulvic acid, respectively. Additionally, the number of large granular cells increased by 37.3% and 40.8% relative to the control in these two groups. Furthermore, the lysozyme activity increased in shrimp receiving dietary supplementation of 1% and 2% fulvic acid by 16.7% and 24.7%, respectively. Phenol oxidase activity, which activates phagocytosis and encapsulation of invading pathogens, increased in all groups supplemented with fulvic acid, with the highest activity in the 1% fulvic acid group. Overall the present results suggest that fulvic acid is a promising feed additive for white-leg shrimp super-intensive culture.

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在超级集约化系统中，膳食富维酸可改善南美白对虾幼体的免疫、消化和抗氧化参数。

在当前的研究中，研究人员考察了在南美白对虾（Litopenaeus vannamei）膳食中补充 0.5%、1% 和 2% 的叶酸的效果。与对照组相比，使用 2% 富维酸处理的一组对虾体重明显增加。这可能与消化效率的提高有关，食物转化率从 2.4 降至 1.9，肝胰腺淀粉酶、蛋白酶和脂肪酶的活性也有所提高。血淋巴超氧化物歧化酶活性的提高表明免疫能力增强，而在添加1%和2%富勒酸的饲料中，对虾的血淋巴细胞数分别增加了16.4%和13.6%。此外，与对照组相比，这两个组的大颗粒细胞数量分别增加了 37.3% 和 40.8%。此外，膳食中添加 1% 和 2% 富维克酸的对虾的溶菌酶活性分别提高了 16.7% 和 24.7%。酚氧化酶能激活吞噬和包裹入侵的病原体，在所有添加了富勒酸的组别中，酚氧化酶的活性都有所提高，其中 1%富勒酸组的活性最高。总之，本研究结果表明，在南美白对虾超级集约化养殖中，富马酸是一种很有前景的饲料添加剂。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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