Effect of Some Water Quality Parameters on Cholesterol and Triglycerides of Wild and Cultured Nile Tilapia (Oreochromis Niloticus), Sudan

The purpose of the current study was to evaluate fat profile (specifically, cholesterol and triglyceride), chemical composition and minerals of Nile tilapia (Oreochromis niloticus) in wild environment (general Nile) compared with aquaculture environment, specifically in different types of ponds (concrete, polyethylene and earthen Ponds) in fish farms in Khartoum State. Also this work was intended to determine and compare physic-chemical parameters of water in the studied fish environments. Moreover, the study was conducted to compare some parameters according to source of water (Nile or wells). A total of 60 samples of Nile tilapia were collected from Nile River and governmental and private fish farms around Khartoum State and the samples were subjected to cholesterol, triglycerides analysis. Total of 48 samples of water samples were collected for water quality parameters (Unionized ammonia NO3-N, total ammonianitrogen NH3-N and Hydrogen Sulphide H2S). The data was subjected to SPSS by using factorial arrangement. Results revealed that Nile tilapia from Nile environment had significantly (P≤0.01) lower levels of cholesterol and triglycerides than that from ponds. There were significant differences (P≤0.05) in all water quality parameters. Nile River and wells water had significant differences (P≤0.05) in H2S. Total ammonia-nitrogen (NH4) showed a highly significant difference (P≤0.01), and total ammonia showed a significant difference (P≤0.05). Accordingly, the study concluded that Nile river water has a high water quality than other sources of water, also, Nile River aquaculture environment is an immediate environment in relation to ponds environment.

Keywords: Oreochromis niloticus, Concrete, Polyethylene, Earthen pond.