Comparative Study on the Impact of Heavy Metals and Chemical Composition Estimations of Fresh Water Fish (Oreochromis Niloticus and Bagrus Bayad)

Abstract

The point of this study was to research the convergences of some overwhelming metals, Cadmium (Cd), Nickel (Ni),Lead( Pb), and chemical composition profile of two commercial critical fish species. Oreochromis niloticus and Bagrus bayad from Jabel Awlia Dam Reservoir and Lake Nubia fisheries of the Sudan, amid winter and summer season. A specimen of 40 fish from every species was arbitrarily gathered via occasionally from two ranges Lake Nubia and Jabel Awlia Dam amid the time of May 2015 to January 2016. For every fish species absolute length, standard length, fork length, and aggregate weight were recorded. Various analytical tests were performed on fish tests. The tests incorporated some heavy metals (Cd, Ni and Pb) and proximate investigation for the protein, moisture, fat and fiery debris (ash). The groupings of overwhelming metals in fish tests were most astounding distinctive criticalness (P˂ 0.01), level of Ni, Pb were essentially (P˂ 0.01) higher in all examples (fish, water) in summer collected in Bagrus bayad from Lake Nubia tests than the Oreochromis niloticus, in light of the fact that influenced via occasional component and contamination sources.Likewise level of Cd demonstrated the most highest value in winter in tilapia at Lake Nubia tests furthermore in water test. The acquired results proclaimed that groupings of major concentrated on metals (Pb, Ni and Cd ppm/l) in water tests and fish substance were not surpassing than the prescribed most extreme satisfactory levels proposed by the Joint FAO/WHO and EC Committees.The chemical composition tests included proximate examination for the rate of protein, moisture, fat, and ash. The protein X contents were most elevated in Bagrus bayad (winter) at Jabel Awlia and the slightest protein contents were most insignificant in Oreochromis niloticus appearing differently in relation to Lake Nubia tests,(P˂ 0.01) . Moreover, the moisture contents were most high in Bagrus bayad (Summer)from Jabel Awlia Dam Reservoir than the Oreochromis niloticus from Lake Nubia tests (Winter).Significant contrasts (P˂ 0.01)were likewise acknowledged in the fat contents were most elevated in Oreochromis niloticus (Summer) at Jabel Awlia Dam Reservoir. The mean values for ash content were Significant differences (P˂ 0.01), the highest in Oreochromis niloticus (winter) from Jabel Awlia Dam Reservoir samples. The other phase of the study was determent of water quality parameters. Physic-chemical characteristic of the water, analytical tests were performed for the Temperature, Ph, Dissolved Oxygen(DO) ,Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD)There were significant differences between the mean values (P˂ 0.01).there was highest temperature in Jabel Awlia Dam (summer) and lowers in Lake Nubia at significant difference (P˂ 0.05). While there was no significant different In pH levels between the areas and seasons. Also there was high value in level of Do in Jabel Awlia Dam (winter) and lowers in Lake Nubia (summer) due to a affected by Bacteria activity. There was no significant different in Body values between the season, while the high value showed in Lake nubia comparing to the Jabel Awlia Dam . Also the rustle showed that the high value of Cod in Lake Nubia (winter) and lowers in (summer) at Jabel Awlia Dam Reservoir.