Dietary selenium requirement of triploid rainbow trout (
            <i>Oncorhynchus mykiss</i>
            ) based on selenium yeast supplementation

Teng, Zhenlei; Zhang, Feng; Wang, L.; Wang, Long; Huang, Tianqing; Zhang, Xuezhen

doi:10.1111/are.15844

Cited by 9 publications

(4 citation statements)

References 62 publications

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“…SEPP, the sole selenoprotein containing multiple selenocysteine residues, predominantly resides in the plasma, where it acts as a transporter of Se to various tissues ( 8 , 49 ). Consistent with previous research in triploid rainbow trout ( 7 ) and Nile tilapia ( 47 ), our study also found higher expression levels of SEPP in fish fed with adequate SePCH, which suggested that dietary SePCH can improve Se transport via SEPP in largemouth bass. SEP15 is localized within the endoplasmic reticulum (ER) lumen, where it can assist in oxidative folding and structural maturation of N-glycosylated proteins for its oxidoreductase activity ( 50 , 51 ).…”

Section: Discussionsupporting

confidence: 92%

“…As an essential micronutrient, dietary Se plays crucial roles in promoting growth and maintaining normal physiological functions in different organisms ( 2 , 34 ). Numerous studies have demonstrated that dietary selenium can influence the growth and development of various aquatic and terrestrial animal species, including largemouth bass ( 1 ), European seabass ( Dicentrarchus labrax ) ( 3 ), rainbow trout ( Oncorhynchus mykiss ) ( 7 ), common carp ( Cyprinus carpio ) ( 35 ), grass carp ( Ctenopharyngodon idellus ) ( 36 ) and chicken ( 37 ). In line with these findings, our results also presented that 0.60 and 1.20 g/Kg SePCH (equivalent to 0.84-1.30 mg/kg) notably heightened WG and DGR, highlighting the role of adequate SePCH (0.60 and 1.20 g/Kg) could enhance the growth performance of largemouth bass ( 1 , 3 ).…”

Section: Discussionmentioning

confidence: 99%

“…Studies have consistently demonstrated that Se deficiency can disrupt the antioxidant system, diminish the capacity to eliminate ROS and induce cellular damage in organisms ( 1 , 12 ). Adequate Se levels can modulate intracellular redox status by regulating the expression and activities of redox-targeted proteins and enzymes, including superoxide dismutase (SOD), thioredoxin (Trx), catalase (CAT), GPx, glutathione reductase (GR), peroxiredoxin (Prx), glutathione S-transferase (GST), SEPH and SEPK, among others ( 4 , 7 ). These regulatory mechanisms are primarily governed by the well-established Nrf2/Keap1 signaling pathway in human, mammals, and other animals ( 1 , 13 ).…”

Section: Introductionmentioning

confidence: 99%

“…Numerous studies have substantiated that Se deficiency or excess can lead to growth retardation, oxidative stress, compromised immunity and dysfunction of the intestinal barrier in animals (1)(2)(3)6). Consequently, organic Se is often included in diets to satisfy the physiological requirements for normal growth and health in animals due to its superior bioavailability and reduced toxicity (1,2,6,7). Nevertheless, limited information is available regarding the utilization of organic Se from plants, which are widely available and more cost-effective, in animals.…”

Section: Introductionmentioning

confidence: 99%

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Effects of selenoprotein extracts from Cardamine hupingshanensis on growth, selenium metabolism, antioxidant capacity, immunity and intestinal health in largemouth bass Micropterus salmoides

Zhang,

Zhao,

Zhang

et al. 2024

Front. Immunol.

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This study aimed to assess the impact of dietary selenoprotein extracts from Cardamine hupingshanensis (SePCH) on the growth, hematological parameters, selenium metabolism, immune responses, antioxidant capacities, inflammatory reactions and intestinal barrier functions in juvenile largemouth bass (Micropterus salmoides). The base diet was supplemented with four different concentrations of SePCH: 0.00, 0.30, 0.60 and 1.20 g/Kg (actual selenium contents: 0.37, 0.59, 0.84 and 1.30 mg/kg). These concentrations were used to formulate four isonitrogenous and isoenergetic diets for juvenile largemouth bass during a 60-day culture period. Adequate dietary SePCH (0.60 and 1.20 g/Kg) significantly increased weight gain and daily growth rate compared to the control groups (0.00 g/Kg). Furthermore, 0.60 and 1.20 g/Kg SePCH significantly enhanced amounts of white blood cells, red blood cells, platelets, lymphocytes and monocytes, and levels of hemoglobin, mean corpuscular volume and mean corpuscular hemoglobin in the hemocytes. In addition, 0.60 and 1.20 g/Kg SePCH increased the mRNA expression levels of selenocysteine lyase, selenophosphate synthase 1, 15 kDa selenoprotein, selenoprotein T2, selenoprotein H, selenoprotein P and selenoprotein K in the fish liver and intestine compared to the controls. Adequate SePCH not only significantly elevated the activities of antioxidant enzymes (Total superoxide dismutase, catalase, glutathione reductase, glutathione peroxidase), the levels of total antioxidant capacity and glutathione, while increased mRNA transcription levels of NF-E2-related factor 2, Cu/Zn-superoxide dismutase, catalase, glutathione reductase and glutathione peroxidase. However, adequate SePCH significantly decreased levels of malondialdehyde and H2O2 and the mRNA expression levels of kelch-like ECH-associated protein 1a and kelch-like ECH-associated protein 1b in the fish liver and intestine compared to the controls. Meanwhile, adequate SePCH markedly enhanced the levels of immune factors (alkaline phosphatase, acid phosphatase, lysozyme, complement component 3, complement component 4 and immunoglobulin M) and innate immune-related genes (lysozyme, hepcidin, liver-expressed antimicrobial peptide 2, complement component 3 and complement component 4) in the fish liver and intestine compared to the controls. Adequate SePCH reduced the levels of pro-inflammatory cytokines (tumour necrosis factor-α, interleukin 8, interleukin 1β and interferon γ), while increasing transforming growth factor β1 levels at both transcriptional and protein levels in the liver and intestine. The mRNA expression levels of mitogen-activated protein kinase 13 (MAPK 13), MAPK14 and nuclear factor kappa B p65 were significantly reduced in the liver and intestine of fish fed with 0.60 and 1.20 g/Kg SePCH compared to the controls. Histological sections also demonstrated that 0.60 and 1.20 g/Kg SePCH significantly increased intestinal villus height and villus width compared to the controls. Furthermore, the mRNA expression levels of tight junction proteins (zonula occludens-1, zonula occludens-3, Claudin-1, Claudin-3, Claudin-5, Claudin-11, Claudin-23 and Claudin-34) and Mucin-17 were significantly upregulated in the intestinal epithelial cells of 0.60 and 1.20 g/Kg SePCH groups compared to the controls. In conclusion, these results found that 0.60 and 1.20 g/Kg dietary SePCH can not only improve growth, hematological parameters, selenium metabolism, antioxidant capacities, enhance immune responses and intestinal functions, but also alleviate inflammatory responses. This information can serve as a useful reference for formulating feeds for largemouth bass.

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