Influence of some Water Quality Parameters on Nutritive Value of Nile Tilapia (Oreochromis Niloticus) Reared on Different Culture Systems (Earthen & Concrete) in Gezira State, Sudan
Author : Omer A Idam, HM Adam, Sara G Elsheakh and Rowaida S Musa
Abstract :
The work was conducted to evaluate the influence of water quality characteristics on nutritive value of Nile tilapia (Oreochromis niloticus) in aquaculture environment, specifically in different types of ponds (earthen and concrete Ponds) in fish farms in Gezira State, mainly crude protein, crude fibre, moisture and dry matter as well as ash. And water quality parameters are: Ammonia, TDS, Temperature and pH. The findings of this work showed some fact on the manifesto of the main effects of some water quality parameters on cultured fish emphasizing on nutritive value between earthen and concrete ponds of O. niloticus which serves as the principle basis in evaluating the nutritional and economical value of the fish and water environment as well. A total of 36 samples of nile tilapia (Oreochromis niloticus) were collected from earthen and concrete ponds fish farms around Gezira State and the samples were subjected to chemical analysis (moisture, dry matter, ash, crude protein, fat, and crude fibre). Also, a total of 36 samples of water were collected from the ponds where fish samples were taken, the samples were taken from pond sites: (Left, Central and Right of ponds). Then, subjected to analysis. The data was subjected to SPSS by using completely randomized design (CRD). The findings of this study revealed that, Oreochromis niloticus from concrete ponds has higher level of nutritive value than earthen ponds farms except fibre contents is higher in earthen ponds farms than concrete ponds farms, and there was highly significant difference (P≤0.01). In nutritive value of Fish between two types of ponds system, except crude fibre is recorded significant difference at (P≤0.05) between two ponds culture system. Also, water quality according to pond type showed a highly significant different (p ≤ 0.01) in all parameters. In contract, Water Quality Parameters according to Pond Sites showed no significant different (p > 0.05) in ammonia and TDS. On the other hand, temperature and pH value showed a highly significant different (p ≤ 0.01). However, all checked parameters of water were fallen in the international acceptable limits. The researchers were recommended that, Facilitations, Encouragements and attention should be paid to aquaculture sector in Gezira state, Sudan so as to increase fish production from aquaculture rather than fisheries sectors.
Keywords :
Gezira State, Oreochromis niloticus, ammonia
