Measurements of Fe and Zn in muscle of Cobia fish (Rachycentron canadum) in different groups in the fishing waters of the Northwest longitudinal Persian Gulf

Document Type : Animal environment

Authors

1 Department of Fisheries, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran

2 South Aquaculture Research Institute, National Institute of Fisheries Research, Agricultural Education and Promotion Research Organization, Ahvaz, Iran

3 Young and Elite Researchers Club, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran

Abstract

This study was done in order to determine and compared the accumulation of iron and zinc in the muscle tissue of fish Cobia (Rachycentron canadum) and its relation to the total length, total weight and age of the fish in the waters of the Persian Gulf was northwest. 96 fish samples were collected at 6 length group. Measuring the level of essential elements samples were digested through dry digestion method. The difference between the means analysis of variance (ANOVA) and the presence or absence of difference and a significant relationship was estimated at 95%. Mean concentrations of iron and zinc in muscle tissue of Rachycentron canadum were 25.50±2.78 and 9.06±1.23 mg/kg dry weight (P<0.05). The highest concentration of iron in groups belonging to different lengths of 102-110 cm (28.21±0.74 mg/kg dry weight) and most of the zinc and nickel belonging to groups larger than 127 cm in length (10.27±0.47 mg/kg dry weight). A positive correlation was established between in the total length and total weight and age and accumulation of metals, iron and zinc at levels not significantly (P>0.05). Concentration of Zn in muscle ofRachycentron canadum was lower than more WHO, MAFF and NHMRC (1000, 50 and 100 mg/kg). Concentration of Fe in muscle ofthis fishwas higher than more FDA (5 mg/Kg).

Keywords


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