Effects of Different Forms of Organic Selenium on Growth Performance, Antioxidant Capacity, and Intestinal Health in Rice Field Eel (<i>Monopterus albus</i>)

To evaluate the effects of different organic selenium sources on rice field eel (<i>Monopterus albus</i>), four isonitrogenous and isolipidic diets were tested: a control (no supplement) and four diets each supplemented with 0.24 mg/kg selenium as diselenoacetic acid (Se1), diselenopropi...

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Main Authors: Denghang Yu, Yujia Liu, Jincheng Wan, Jiaxiang Chen, Yangjie Qiu, Chi Zhang
Format: Article
Language:English
Published: MDPI AG 2025-07-01
Series:Animals
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Online Access:https://www.mdpi.com/2076-2615/15/13/1949
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author Denghang Yu
Yujia Liu
Jincheng Wan
Jiaxiang Chen
Yangjie Qiu
Chi Zhang
author_facet Denghang Yu
Yujia Liu
Jincheng Wan
Jiaxiang Chen
Yangjie Qiu
Chi Zhang
author_sort Denghang Yu
collection DOAJ
description To evaluate the effects of different organic selenium sources on rice field eel (<i>Monopterus albus</i>), four isonitrogenous and isolipidic diets were tested: a control (no supplement) and four diets each supplemented with 0.24 mg/kg selenium as diselenoacetic acid (Se1), diselenopropionic acid (Se2), diselenobutyric acid (Se3), or diselenodibutyric acid (Se4). Rice field eels (initial body weight 18.43 ± 0.03 g) were fed for 60 days. The Se1 group showed significantly higher WGR and SGR than the control. Whole-body crude protein was significantly increased in the Se3 and Se4 groups, while crude lipid content was significantly decreased in Se1, Se3, and Se4 groups. Selenium concentrations in the liver and kidney were highest in the Se2 group. Serum AST and ALT activities were decreased in Se4. In the Se4 group, intestinal CAT, T-SOD, and GSH-PX activities were enhanced, along with upregulation of Gpx8, CAT, Nrf2, and Keap1. Hepatic CAT and GSH-PX increased in Se2 and Se4, with Gpx8 upregulated in Se1. Intestinal lipase activity was significantly increased in Se2. At the phylum level, <i>Proteobacteria</i> predominated. At the genus level, <i>Cetobacterium</i> predominated. In summary, diselenoacetic acid enhanced growth, while diselenopropionic acid and diselenodibutyric acid improved antioxidant defense and intestinal health in rice field eel.
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spelling doaj-art-0c51a49fb65e47438ecdf639b6ffd19c2025-07-11T14:35:06ZengMDPI AGAnimals2076-26152025-07-011513194910.3390/ani15131949Effects of Different Forms of Organic Selenium on Growth Performance, Antioxidant Capacity, and Intestinal Health in Rice Field Eel (<i>Monopterus albus</i>)Denghang Yu0Yujia Liu1Jincheng Wan2Jiaxiang Chen3Yangjie Qiu4Chi Zhang5Hubei Key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan 430023, ChinaHubei Key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan 430023, ChinaHubei Key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan 430023, ChinaHubei Key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan 430023, ChinaHubei Key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan 430023, ChinaHubei Key Laboratory of Animal Nutrition and Feed Science, School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan 430023, ChinaTo evaluate the effects of different organic selenium sources on rice field eel (<i>Monopterus albus</i>), four isonitrogenous and isolipidic diets were tested: a control (no supplement) and four diets each supplemented with 0.24 mg/kg selenium as diselenoacetic acid (Se1), diselenopropionic acid (Se2), diselenobutyric acid (Se3), or diselenodibutyric acid (Se4). Rice field eels (initial body weight 18.43 ± 0.03 g) were fed for 60 days. The Se1 group showed significantly higher WGR and SGR than the control. Whole-body crude protein was significantly increased in the Se3 and Se4 groups, while crude lipid content was significantly decreased in Se1, Se3, and Se4 groups. Selenium concentrations in the liver and kidney were highest in the Se2 group. Serum AST and ALT activities were decreased in Se4. In the Se4 group, intestinal CAT, T-SOD, and GSH-PX activities were enhanced, along with upregulation of Gpx8, CAT, Nrf2, and Keap1. Hepatic CAT and GSH-PX increased in Se2 and Se4, with Gpx8 upregulated in Se1. Intestinal lipase activity was significantly increased in Se2. At the phylum level, <i>Proteobacteria</i> predominated. At the genus level, <i>Cetobacterium</i> predominated. In summary, diselenoacetic acid enhanced growth, while diselenopropionic acid and diselenodibutyric acid improved antioxidant defense and intestinal health in rice field eel.https://www.mdpi.com/2076-2615/15/13/1949<i>Monopterus albus</i>organic seleniumgrowth performanceantioxidant capacitygut microbiota
spellingShingle Denghang Yu
Yujia Liu
Jincheng Wan
Jiaxiang Chen
Yangjie Qiu
Chi Zhang
Effects of Different Forms of Organic Selenium on Growth Performance, Antioxidant Capacity, and Intestinal Health in Rice Field Eel (<i>Monopterus albus</i>)
Animals
<i>Monopterus albus</i>
organic selenium
growth performance
antioxidant capacity
gut microbiota
title Effects of Different Forms of Organic Selenium on Growth Performance, Antioxidant Capacity, and Intestinal Health in Rice Field Eel (<i>Monopterus albus</i>)
title_full Effects of Different Forms of Organic Selenium on Growth Performance, Antioxidant Capacity, and Intestinal Health in Rice Field Eel (<i>Monopterus albus</i>)
title_fullStr Effects of Different Forms of Organic Selenium on Growth Performance, Antioxidant Capacity, and Intestinal Health in Rice Field Eel (<i>Monopterus albus</i>)
title_full_unstemmed Effects of Different Forms of Organic Selenium on Growth Performance, Antioxidant Capacity, and Intestinal Health in Rice Field Eel (<i>Monopterus albus</i>)
title_short Effects of Different Forms of Organic Selenium on Growth Performance, Antioxidant Capacity, and Intestinal Health in Rice Field Eel (<i>Monopterus albus</i>)
title_sort effects of different forms of organic selenium on growth performance antioxidant capacity and intestinal health in rice field eel i monopterus albus i
topic <i>Monopterus albus</i>
organic selenium
growth performance
antioxidant capacity
gut microbiota
url https://www.mdpi.com/2076-2615/15/13/1949
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