DefinePK

Abstract

Background and Objective Salinity is one of the important factors beside the oxygen and the temperature effecting on the fish, it had a direct effect on fish. Materials and Methods About 300 fish were obtained from common carp Cyprinus carpio, the fish were fed for 2 weeks on a commercial diet with protein content of 31.9 in a manner of two serves a day and in a percentage of 3 of the overall body weight, the treatments divided in 4 group 5, 10,15 g L1501 with the control treatment 0.1 g L1501. After adapting the fish to the laboratory conditions and the saline concentration 0.1 g L1501 liquefied water, they were gradually exposed to the above mentioned saline concentrations. Results The percentage of water content in the muscles decreased to 77.34, 63.20 and 62.12 when salinity increased to 5, 10 and 15 g L1501 compared to control sample 78.18. Conclusion From the obtained results, it is concluded the salinity effect on the water content of the muscles and that as important for the osmoregulation indictor in fresh water fish.