author(s)
Dhamyaa Oleiwi Abdulhussein Al-Saadi

abstract
The present study was conducted to investigate the effect of salty feeding on sodium and potassium ions concentration and water content of common carp (Cyprinus carpio) muscles. Eighty four (n=84) Cyprinus carpio fingerlings of 20-40 g body weight were randomly distributed into four equal groups, with three replicates per each group. The fingerlings were distributed into 12 glass pool (7 fingerlings per pool of 30 ± 10 g average body weight). Thee experiment was conducting during the period from November 2016 to February 2017. Results revealed that the muscle's sodium concentrations were 42.98, 58.18 and 71.34 mM/Kg tissue in 1, 3 and 5% dietary NaCl treatments respectively, as compared with the control group (37.62 mM/Kg tissue). The corresponding muscle's potassium concentrations were 108.62, 78.06, 96.33, and 72.11 mM/Kg. In conclusion, this study confirmed that the dietary NaCl of common carp fish led to elevating of muscle's sodium, potassium and water contents as compared with unfed fish.