article · Saudi Journal of Biological Sciences
This study investigated the effects of selenium (Se) nanoparticles on the growth, antioxidant capacity, and liver health of Striped catfish. Catfish were fed diets containing varying levels of Se nanoparticles (0, 0.5, 1, and 2 mg/kg) for 60 days. Results showed that dietary Se nanoparticles significantly improved growth performance, specific growth rate, feed consumption, and protein efficiency ratio, while reducing the feed conversion ratio. Fish receiving Se nanoparticles also had higher Se accumulation in their bodies, improved carcass composition with increased protein and ash content, and enhanced antioxidant enzyme activities with reduced malondialdehyde levels. Liver health indicators, such as villi height and branching, and goblet cell numbers, also improved. The study concluded that Se nanoparticles are essential for optimal growth, antioxidant capacity, and liver wellbeing in Striped catfish, recommending a dosage of 1.02-1.11 mg/kg diet.
Optimising the nutrition of farmed fish is crucial for sustainable aquaculture, ensuring healthy growth and disease resistance. This research provides specific dietary recommendations for selenium nanoparticles, which could lead to more efficient and healthier production of Striped catfish, benefiting both producers and consumers.
This research offers a direct application for the aquaculture industry, specifically for Striped catfish farming. The findings suggest that incorporating selenium nanoparticles into fish feed at a recommended dosage of 1.02-1.11 mg/kg can improve growth, feed efficiency, and overall fish health. This is applied research with clear, near-market potential for feed manufacturers and fish farmers seeking to enhance productivity and sustainability.
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Selenium (Se) is a multifunctional trace element required in specific amounts for the optimal growth of aquatic finfish species. For this reason, this study investigated the effect of Se nanoparticles on the growth behavior, antioxidative capacity, and liver wellbeing of Striped catfish (<i>Pangasianodon hypophthalmus</i>). Striped catfish fed varying Se nanoparticles levels (0. 0.5, 1, and 2 mg/kg) in triplicate units and kept for 60 days. Striped catfish delivered dietary Se nanoparticles had markedly increased growth performance, specific growth rate (SGR), consumed feed, and protein efficiency ratio but reduced feed conversion ratio (FCR). The whole body, liver, muscle, and gills have higher Se accumulation levels in fish that received Se nanoparticles than the control with the highest level in fish fed 2 mg/kg. The carcass composition showed higher protein content in fish fed 1 and 2 mg/kg (<i>p</i> = 0.001 and 0.001) and higher ash content (<i>p</i> = 0.001 and 0.002) in fish fed 2 mg/kg than the remaining groups. Superoxide dismutase was meaningfully activated in Striped catfish delivered 1 and 2 mg Se nanoparticles/kg compared with the control (<i>p</i> < 0.05). Also, catalase and glutathione peroxidase activities were higher, and malondialdehyde level was lower in Striped catfish fed Se nanoparticles at 0.5, 1, and 2 mg/kg than the control (<i>p</i> < 0.05). The villi exhibited a visible increase in both height and branching with an increased level of Se nanoparticles in addition to the increased number of goblet cells. The Se nanoparticles-treated fish revealed dose-dependent modifications fluctuated from diffuse fatty vacuolization in hepatocytes with eccentric pyknotic hepatocytes nuclei. In conclusion, Se nanoparticles are required for the optimum growth behavior, antioxidative capacity, and liver wellbeing of Striped catfish. Based on SGR and FCR data's regression analysis, Se nanoparticles are recommended at 1.02-1.11 mg/kg diet.
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DOI: 10.1016/j.sjbs.2021.08.023
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