Effect of salty feeding in sodium and potassium ions concentrations in blood Plasma and packed cells volum (PCV) in common carp (Cyprinus carpio)

Abstract

This study was conducted to investigate the effect of salt feeding on some physiological parameters in common carp (Cyprinus carpio), where food salt was used in the diets formulation in ratios: 1, 3 and 5 % beside the control diet which was free of salt, each of diet represented treatment with three replications. The effect of salt concentration sodium and potassium ions in blood plasma and packed cell volume were studied. 200 common carp fish were used, trial fish was distributed on 12 glass tanks as 6 fish /tank at average weight 30 ±10 gm. The results of physiological parameters, showed that sodium concentrations in plasma where 111.15 ±2.30, 127.20 ±4.04 and 151.46 ±3.46mm/l in concentration salt at percentage 1, 3 and 5 respectively, compared with control (T1 107.22 ±2.88 mm/l) and the potassium concentrations were 9.34 ±0.19, 15.77 ±0.11 and 17.08 ±0.04 mm/l in concentration 1, 3 and 5 respectively, in comparison with control (7.16 ±0.09 mm/l).The packed cells volume was decreased to 21.00 ±1.00, 18.50 ±0.05 and 10.50 ±0.50% in concentration 1, 3 and 5 respectively, while in control 25.50 ±0.50%.