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Showing 4 results for Selenium Nanoparticles
Eisa Falahat Naser Abad, Saeed Ziaei Nejad, Alireza Ghaedi, Mosayyeb Seyedi, Seyyed Hosein Moradian, Volume 28, Issue 6 (2-2020)
Abstract
This research investigated the influence of selenium nanoparticles (SeNPs) on the reproductive performance of female rainbow trout (mykiss Oncorhynchus) broodstocks. A total of 120 female broodstock were selected from breeders of the Shahid Motahary Coldwater Fishes Genetic and Breeding Research Center. After adaptation, fish were divided into four treatments in three replicates. Fish were fed diets containing 0 (control) 0.5, 1 and 2 mg SeNPs per kg of diet for 60 days. Eggs quality parameters such as fecundity, fertilization rate, eyed egg rate, hatching, etc. were evaluated. The highest fertilization rate was observed in fish fed with 2 mg selenium (99.30%), which had a significant difference with control groups (p< 0.05) but did not show any significant difference (p>0.05) with fish fed 0.5 mg and 1 mg SeNPs. Broodstocks fed with 2 mg SeNPs had the highest absolute fecundity, which had a significant difference with groups fed 1 mg SeNPs (p <0.05), but did not show significant difference with other two treatments (p >0.05). ) The highest and the lowest relative fecundity were seen in group fed 2 mg SeNPs and 1 mg SeNPs, respectively. However, there was no significant difference in relative fecundity between treatments (p >0.05). The highest egg diameter was in fish fed 0.5 mg SeNPs. Egg diameter in the control group, fish fed 2 and 1 mg SeNPs, were 5.39, 5.39 and 5.40 mm, respectively). There was no significant difference for egg diameters among gruops (p> 0.05). The highest and the lowest mean total egg weight were in group fed 0.5 mg SeNPs and 1 mg SeNPs, respectively, and no significant differences were observed between treatments (P >0.05). The highest percentage of hatching was observed in groups fed 2 mg SeNPs, which had a significant difference with other treatments (p <0.05). The highest survival rate was observed in groups fed 2 mg SeNPs too, which showed no significant difference with other treatments (p >0.05). Increase in the survival rate associated with an increase in the concentration of SeNPs. In general, inclusion of SeNPs in diet, improve the quality and quantity of eggs and reproductive function (fertilization, eyed rate and hatching) in rainbow trout breeders.
F Kianersi, , , Amir Parvize Salati, Hosein Hosmand Hosmand, Volume 28, Issue 6 (2-2020)
Abstract
In this study, the effects of both mineral and nanoparticles selenium were investigated on growth performance, liver enzymes, and antioxidant status of yellowfin porgy, Acanthopagrus latus. A total number of 300 fish (average weight = 25±3 g) were randomly distributed in five groups according to according to diet: control (basal diet), nanoSe (1 and 1.5 mg/kg -supplemented diet) and sodium selenite (1 and 1.5 mg/kg -supplemented diet). Fish were fed with experimental diets for six weeks. At the end of the experiment, liver and blood samples obtained to assay the liver and antioxidant enzymes activities. The results showed that addition of 1 and 1.5 mg/kg nanoSe to the diet promoted growth, as weight gain increased significantly in A. latus fed by nanoSe (p<0.05). Also, the highest glutathione peroxide and catalase activity were recorded in treatment containing nanoSe (p<0.05). While the lowest ALT activity were seen in 1.5 mg/kg nanoSe (p<0.05). The lowest level of Malondialdehyde (MDA) was in the liver of fish fed by nanoSe, while there were no significant differences with the control and Sodium Selenite groups (p>0.05). Our findings showed that Selenium nanoparticles had beneficial effects on growth performance and antioxidant defense system of A. latus.
Farahnaz Kianersi, , , , , Volume 30, Issue 5 (12-2021)
Abstract
Mercury causes oxidative stress in the body by producing oxygen free radicals and destroying antioxidant sources. The most important application of selenium is its role in the construction of antioxidant enzymes such as glutathione peroxidase, the function of which is to eliminate free radicals and reactive oxygen species. The aim of this study was to investigate the antioxidant effect of selenium nanoparticles and sodium selenite on biochemical parameters and antioxidant defense in Acanthopagrus latus in the presence of mercury chloride. A total number of 300 fish (25±3 g) were randomly distributed in five groups according to diet: control, nanoSe and sodium selenite (1 and 1.5 mg/kg). Fish were fed with experimental diets for six weeks. They were then exposed to a sublethal dose of HgCl2 for two weeks. At the end of the feeding period and after exposure, blood and liver samples were taken from all treatments and the activity of liver enzymes and antioxidants were measured. After six weeks of feeding the results showed that the form of selenium nanoparticles improved growth performance, increased the activity of antioxidant enzymes GPX and CAT and reduced the content of MDA, AST and ALT (p<0.05). The results showed that the form of selenium nanoparticles was more effective than the inorganic form of selenium during the period of exposure in increasing the activity of the antioxidant enzymes GPX and CAT. Decreased MDA content in the liver of fish fed selenium nanoparticles indicated a reduction in lipid peroxidation and a reduction in oxidative stress. The activity of ALT, AST and ALP enzymes increased more in the groups fed with selenium sodium than in the groups fed with nanoparticles (p<0.05). This study showed that the addition of selenium nanoparticles to the basic diet was more effective in terms of growth and antioxidant indices in yellowfin porgy (A. latus) after exposure to mercury chloride.
Eisa Falahat Naserabad, Esmaeil Kazemi, Seyed Abdolhamid Hoseini, Mohamad Meisam Salahi Ardakani, Roghieh Mahmoudi, Volume 32, Issue 3 (9-2023)
Abstract
In this research, the effect of selenium nanoparticles on the performance of antioxidant enzymes, including superoxide dismutar (SOD), glutathione peroxidase (GPx), malondialdehyde (MDA), and catalase (CAT) levels, and male reproductive egg ions of rainbow trout was investigated. The number of 144 fertile pieces of 4-year-old Iranian females was divided into four treatments in three replications. The treatments were fed with diet containing zero (control), 0.5, 1 and 2 mg of selenium nanoparticles per kg of diet for 60 days until egg maturation. Based on the results of the research, the values of SOD, CAT, and MDA have shown significant differences in the eggs from different treatments (p<0.05). The lowest level of SOD enzyme and the highest level of CAT enzyme were observed in the control treatment, which showed a significant difference with other treatments. There was no significant difference in the amount of GPx enzyme between different treatments (p>05). The amount of MDA enzyme showed a significant difference among the treatments, while the control group had the highest level of 363±16.8 mmol/ml and the fish fed with selenium nanoparticles at 2 mg/kg had the lowest level of 181±9.5 mmol/ml Comparing the average amounts of magnesium and calcium among different treatments showed a significant increase in the amounts of the mentioned ions in the treatment fed with selenium nanoparticles at the rate of 2 mg/kg of food compared to other treatments (p<0.05). In general, considering the decreasing role of antioxidant enzymes and its increasing role in the amounts of magnesium and calcium inorganic compounds in the eggs of mothers fed with more selenium nanoparticles, this essential micronutrient can be used as It should be considered as a suitable candidate for further research in order to improve the quality of spawning eggs of female rainbow trout by adding to the diet.
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