Scienceline Publications Journal of Life Science and Biomedicine 2251-9939 7 3 2017 May The effects of water quality parameters on chemical composition of Oreochromis niloticus and Bagurs bayad procured from Jebal Aulia Dam and Lake Nubia 26 30 https://jlsb.science-line.com/attachments/article/54/J.%20Life%20Sci.%20Biomed.%207(3)%2026-30,%202017.pdf EN Mahdi Eltahir Mohammed Department of Animal Production, University of Western Kordofan, Faculty of Veterinary Sciences, Gibash, Sudan Hassan M. A. Sulieman Department of Biology, Deanship of Academic Services, Prep. Year, Yanbu Branch, Taibah University 039, Saudi Arabia Kingdom Adam I. Ahmed Department of Biochemistry and Food Science, Faculty of Natural Resources and Environmental Studies, University of Kordofan, Elobeid, Sudan This study aimed to investigate the effect of some water quality parameter including water temperature, pH, dissolved oxygen (DO), chemical oxygen demand (COD) and biochemical oxygen demand (BOD) on chemical composition of Oreochromis niloticus and Bagurs bayad procured from Jebal Aulia Dam and Lake Nubia. The chemical composition of fish muscles was included protein, moisture, fat, and ash contents, using AOAC method. The findings of fat contents were most elevated in Bagurs bayad (10.46+0.47 at Jebal Aulia Dam, and the slightest fat contents were recorded insignificant in Oreochromis niloticus (6.32+0.32) appearing differently in relation to Lake Nubia samples, (P˂ 0.01). Moreover, the protein contents were observed varied slightly in both studied fish at Jebal Aulia and Lake Nubia. Significant contrasts (P˂ 0.01) likewise acknowledged in the Ash contents and were most appeared in O. niloticus in Jebal Aulia. The mean values for moisture content of Oreochromis niloticus were observed a significant difference (P˂ 0.01), at Lake Nubia. Physio-chemical characteristics of the water showed significant variations between the mean values of temperature of Jebal Aulia Dam and Lake Nubia (P˂ 0.05). While there was no significant different in pH levels between both sites. The slight variations of DO, BOD significant deference (P˂ 0.05) and COD appeared on both studied lakes insignificantly (P> 0.05). Lake Nubia Jebel Aulia Nile fish proximate analysis