A Study on the Dietary Yeast Polysaccharide Supplementation in Growth Performance, Antioxidant Capacity, and Immunity of Juvenile Largemouth Bass (<i>Micropterus salmoides</i>)

The aim of this study was to investigate the effects of dietary yeast polysaccharide (YPS) supplementation on the growth performance, whole-body composition, antioxidant capacity, and immunity of juvenile largemouth bass (<i>Micropterus salmoides</i>). In this study, five diets with YPS...

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Main Authors: Junjie Qin, Haifeng Mi, Mingchun Ren, Dongyu Huang, Hualiang Liang, Lu Zhang, Tao Teng, Heng Yin
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Fishes
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Online Access:https://www.mdpi.com/2410-3888/10/1/26
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author Junjie Qin
Haifeng Mi
Mingchun Ren
Dongyu Huang
Hualiang Liang
Lu Zhang
Tao Teng
Heng Yin
author_facet Junjie Qin
Haifeng Mi
Mingchun Ren
Dongyu Huang
Hualiang Liang
Lu Zhang
Tao Teng
Heng Yin
author_sort Junjie Qin
collection DOAJ
description The aim of this study was to investigate the effects of dietary yeast polysaccharide (YPS) supplementation on the growth performance, whole-body composition, antioxidant capacity, and immunity of juvenile largemouth bass (<i>Micropterus salmoides</i>). In this study, five diets with YPS levels of 0.00% (control), 0.05% (0.05Y), 0.10% (0.10Y), 0.15% (0.15Y), and 0.20% (0.20Y) were designed and prepared. A total of 300 healthy fish (3.20 ± 0.03 g) were randomly divided into 15 floating cages (1 × 1 × 1 m) in five different groups, with three replicates per group, for an 8-week culture experiment. The 0.10Y and 0.20Y groups had significantly higher feed conversion ratios compared with the control group. There was no significant effect on any of the other growth indicators. Plasma biochemical indices showed that the 0.10Y group exhibited the highest plasma alkaline phosphatase content and the 0.20Y group exhibited the highest plasma glucose content. Plasma antioxidant indices (total antioxidant capacity, superoxide dismutase, and glutathione) and antioxidant genes (catalase and superoxide dismutase) were elevated in the 0.05Y or 0.10Y groups, and the malondialdehyde content decreased with increasing YPS concentration. Moreover, the 0.05Y group showed significantly higher immune-related gene (nuclear factor-kappa B, interleukin-8, and interleukin-10) mRNA expression. Altogether, our results indicate that dietary YPS supplementation enhances the antioxidant and immune capacity of <i>M. salmoides</i>, but with no positive effect on their growth.
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spelling doaj-art-b5921537488f42498d3a2bd7e26eb8782025-01-24T13:32:29ZengMDPI AGFishes2410-38882025-01-011012610.3390/fishes10010026A Study on the Dietary Yeast Polysaccharide Supplementation in Growth Performance, Antioxidant Capacity, and Immunity of Juvenile Largemouth Bass (<i>Micropterus salmoides</i>)Junjie Qin0Haifeng Mi1Mingchun Ren2Dongyu Huang3Hualiang Liang4Lu Zhang5Tao Teng6Heng Yin7Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, ChinaTongwei Agricultural Development Co. Ltd., Key Laboratory of Nutrition and Healthy Culture of Aquatic, Livestock and Poultry, Ministry of Agriculture and Rural Affairs, Healthy Aquaculture Key Laboratory of Sichuan Province, Chengdu 610093, ChinaWuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, ChinaKey Laboratory of Integrated Rice-Fish Farming Ecology, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, ChinaWuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, ChinaTongwei Agricultural Development Co. Ltd., Key Laboratory of Nutrition and Healthy Culture of Aquatic, Livestock and Poultry, Ministry of Agriculture and Rural Affairs, Healthy Aquaculture Key Laboratory of Sichuan Province, Chengdu 610093, ChinaTongwei Agricultural Development Co. Ltd., Key Laboratory of Nutrition and Healthy Culture of Aquatic, Livestock and Poultry, Ministry of Agriculture and Rural Affairs, Healthy Aquaculture Key Laboratory of Sichuan Province, Chengdu 610093, ChinaTongwei Agricultural Development Co. Ltd., Key Laboratory of Nutrition and Healthy Culture of Aquatic, Livestock and Poultry, Ministry of Agriculture and Rural Affairs, Healthy Aquaculture Key Laboratory of Sichuan Province, Chengdu 610093, ChinaThe aim of this study was to investigate the effects of dietary yeast polysaccharide (YPS) supplementation on the growth performance, whole-body composition, antioxidant capacity, and immunity of juvenile largemouth bass (<i>Micropterus salmoides</i>). In this study, five diets with YPS levels of 0.00% (control), 0.05% (0.05Y), 0.10% (0.10Y), 0.15% (0.15Y), and 0.20% (0.20Y) were designed and prepared. A total of 300 healthy fish (3.20 ± 0.03 g) were randomly divided into 15 floating cages (1 × 1 × 1 m) in five different groups, with three replicates per group, for an 8-week culture experiment. The 0.10Y and 0.20Y groups had significantly higher feed conversion ratios compared with the control group. There was no significant effect on any of the other growth indicators. Plasma biochemical indices showed that the 0.10Y group exhibited the highest plasma alkaline phosphatase content and the 0.20Y group exhibited the highest plasma glucose content. Plasma antioxidant indices (total antioxidant capacity, superoxide dismutase, and glutathione) and antioxidant genes (catalase and superoxide dismutase) were elevated in the 0.05Y or 0.10Y groups, and the malondialdehyde content decreased with increasing YPS concentration. Moreover, the 0.05Y group showed significantly higher immune-related gene (nuclear factor-kappa B, interleukin-8, and interleukin-10) mRNA expression. Altogether, our results indicate that dietary YPS supplementation enhances the antioxidant and immune capacity of <i>M. salmoides</i>, but with no positive effect on their growth.https://www.mdpi.com/2410-3888/10/1/26juvenile largemouth bassdietary supplementationyeast polysaccharideantioxidant capacityimmunity
spellingShingle Junjie Qin
Haifeng Mi
Mingchun Ren
Dongyu Huang
Hualiang Liang
Lu Zhang
Tao Teng
Heng Yin
A Study on the Dietary Yeast Polysaccharide Supplementation in Growth Performance, Antioxidant Capacity, and Immunity of Juvenile Largemouth Bass (<i>Micropterus salmoides</i>)
Fishes
juvenile largemouth bass
dietary supplementation
yeast polysaccharide
antioxidant capacity
immunity
title A Study on the Dietary Yeast Polysaccharide Supplementation in Growth Performance, Antioxidant Capacity, and Immunity of Juvenile Largemouth Bass (<i>Micropterus salmoides</i>)
title_full A Study on the Dietary Yeast Polysaccharide Supplementation in Growth Performance, Antioxidant Capacity, and Immunity of Juvenile Largemouth Bass (<i>Micropterus salmoides</i>)
title_fullStr A Study on the Dietary Yeast Polysaccharide Supplementation in Growth Performance, Antioxidant Capacity, and Immunity of Juvenile Largemouth Bass (<i>Micropterus salmoides</i>)
title_full_unstemmed A Study on the Dietary Yeast Polysaccharide Supplementation in Growth Performance, Antioxidant Capacity, and Immunity of Juvenile Largemouth Bass (<i>Micropterus salmoides</i>)
title_short A Study on the Dietary Yeast Polysaccharide Supplementation in Growth Performance, Antioxidant Capacity, and Immunity of Juvenile Largemouth Bass (<i>Micropterus salmoides</i>)
title_sort study on the dietary yeast polysaccharide supplementation in growth performance antioxidant capacity and immunity of juvenile largemouth bass i micropterus salmoides i
topic juvenile largemouth bass
dietary supplementation
yeast polysaccharide
antioxidant capacity
immunity
url https://www.mdpi.com/2410-3888/10/1/26
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