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Accueil du site → Master → Soudan → Determination of some Heavy Metals in Cultured Nile Tilapia (Oreochromis niloticus) and Catfish (Clarias brachysoma) in Western Kordofan State, Sudan

University of Gezira (2021)

Determination of some Heavy Metals in Cultured Nile Tilapia (Oreochromis niloticus) and Catfish (Clarias brachysoma) in Western Kordofan State, Sudan

Daoud, Badr Aldeen Osman Makki

Titre : Determination of some Heavy Metals in Cultured Nile Tilapia (Oreochromis niloticus) and Catfish (Clarias brachysoma) in Western Kordofan State, Sudan

Auteur : Daoud, Badr Aldeen Osman Makki

Université de soutenance : University of Gezira

Grade : Master of Science (MS) in Fish Production and Technology 2021

Résumé
The content of heavy metals in fish can enhance or counteract the positive benefits of the omega-3 and protein in fish (Mary and Adeniyi, 2012). At the same time, the levels of contaminants in fish are of particular interest because of the potential effects of such substances on the fish itself and on the organisms that consume them, including humans (Burger and Gochfeld, 2005). The current study was conducted in two different localities have been selected in Western Kordofan State (Elsonout and Abu-zabad) to evaluate the similarities and differences in heavy metals Concentrations (Copper (Cu), Cadmium (Cd), Zinc (Zn), and Lead (Pb)) in the differen organ (liver, gills and muscles) of two Fish Species : Nile tilapia (Oreochromis niloticus) and Catfish (Clarias brachysoma) cultured in Dams, Western Kordofan State. Moreover, the study was intended to evaluate the similarities and differences in Heavy Metals Concentrations (Copper (Cu), Cadmium (Cd), Zinc (Zn), and Lead (Pb)) in Dams water where Fish Species are cultured, Western Kordofan State. Furthermore, the evaluation was included the Correlation of Heavy Metals accumulation between fish organs and water samples were compared. Finally, the evaluation was done for the comparison of these heavy metals levels with recommended levels by FAO, WHO and other international organizations. A total of 108 samples has been taken from two marketable size fish (gills ; livers and muscles) species : (Oreochromis niloticus) and Catfish (Clarias brachysoma) : cultured in Dams (Elsonout and Abu-zabad localities) were subjected to analysis Heavy Metals accumulations (Copper (Cu), Cadmium (Cd), Zinc (Zn), and Lead (Pb). Moreover, A total of 18 water samples were taken from Dams (shallow, middle and deep water) where fish samples has been taken. The data was subjected to SPSS by using factorial design. The findings of this work were revealed that, there were a highly significant differences (P≤0.01) in all heavy metals among gills, liver and muscles of Oreochromis niloticus and Clarias brachysoma cultured in Dams (Elsonout and Abu-zabad localities). And there was a highly significant difference (P≤0.01) in all Heavy metals among gills, liver and muscles of O. niloticus according to localities. However, concerning fish Spp, O. niloticus was recorded the higher values in Pb than Clarias brachysoma, whereas Clarias brachysoma was recorded the higher values in Zn ; Cu and Cd than O. niloticus. Anyway, when compared fish organs ; we found that, Gills were recorded the maximum figures in all Heavy Metals followed by Livers and the minimum figures were recorded by muscles. The results of this study were in the permissible levels recommended by international organizations. According to the findings, I recommend that, People of western Kordofan State should eat O. niloticus and Clarias brachysoma and there was no Heavy Metal hazards found in these fish.

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Page publiée le 13 janvier 2022