Showing 3 results for Smiley
Farideh Ghalebi, Amirhossein Smiley, Abdolmohammad Abedian Kenari,
Volume 9, Issue 3 (8-2020)
Abstract
The effect of different levels of fucoidan on fatty acid profile and growth of rainbow trout were investigated. 150 fish (average weight 18.84 ± 70.7) were distributed in 15 fiberglass tanks (100 liters) and fed for 8 weeks at different levels (0 (control), 0.1%, 0.5%, 1% and 2% fucoidan). The results showed that the treatment with the highest amount of fucoidan had the highest final weight, specific growth rate and body weight gain, and there was a significant difference between treatments (p <0.05). There was no significant difference between feed conversion ratio and different treatments (p> 0.05). The difference between EPA, DHA, SFA, MUFA, n-3, HUFA and ratio of n-3 to n-6 was not significant (p >0.05), while PUFA and Arachidonic acid significantly different between treatments (p <0.05) and the highest value was observed in in treatment 2 and 1% respectively. Based on the results of this study, it can be concluded that this type of Polysaccharide at high doses (1 and 2% of fucoidan) can improve the growth performance and maintain the quality of muscle fatty acids.
Amirhossein Smiley, Nazila Yeganeh,
Volume 11, Issue 3 (8-2022)
Abstract
This study was carried out after receiving a report of the mortality of Sterlet sturgeon (Acipenser ruthenus) juveniles from a fish farm in Sari-Mazandaran in April 2021 to isolate and identify the pathogen in the ill Sterlet sturgeon (A. ruthenus) juveniles. Sampling was performed from 20 ill Sterlet (A. ruthenus) juveniles. Clinical symptoms were recorded, followed by autopsy, kidney, and liver tissue sampling, bacterial culture, biochemical tests, anti-biogram test, DNA isolation, and 16Sr RNA gene sequencing. The tested isolate with 1418 base pairs (bp) was identified as a non-motile strain of A. veronii bacteria. It was registered in the World Gene Bank (NCBI) under the name Aeromonas veronii TMU000126. This strain of bacterium showed sensitivity to the Florfenicol as well as, resistance to Trimethoprim-sulfamethoxazole, Oxytetracycline, Doxycycline, and Fosfomycin antibiotics. The results revealed that the non-motile strain of A. veronii, like its motile strain, was the cause of disease and mortality in Sterlet sturgeon (A. ruthenus). According to the available studies, this study might be considered the first study on the disease of the sturgeon species of Sterlet (A. ruthenus), and the pathogenicity of the non-motile strain of A. veronii species.
Seyedeh Mahsa Hosseini Choupani, Amirhossein Smiley, Mehdi Alikhani,
Volume 12, Issue 2 (4-2023)
Abstract
Zebrafish is considered as a useful laboratory model due to its diverse characteristics, including self-renewal. The embryo of this fish has unique characteristics in the early stages of development, and its effects were observed in various studies. The differentiating factors present in stem cells isolated from zebrafish embryos are effective in improving the functional status of patients, and exposure to zebrafish embryo extracts in the early stages of development may increase the expression of multipotent stem cells and exert positive effects. In this study, we investigated the antioxidant properties of the zebrafish embryo extract in different embryonic stages of development.The Zebrafish egg extract was prepared in different embryonic stages. Its effect in concentrations of 0.5, 1, 1.5 and 2 mg/ml on DPPH free radical scavenging activity, ABTS radical inhibitory activity and iron reducing power (FRAP) were investigated. The studied groups included protein extracts in morula, blastula and gastrula stages. According to the obtained results, the amount of protein varied in different embryonic stages and the amount of protein increased with the progress of fetal growth and the amount of fat decreased.The protein extract in the gastrula stage showed the highest level of DPPH inhibition and iron ion reduction at a concentration of 2 mg/ml compared to the morula and blastula groups (P<0.05). Also, the protein extract in the embryonic stage of blastula had the highest inhibition of ABTS at a concentration of 2 mg/ml compared to other groups (P<0.05).
