A survey on ionic and metabolite factors of blood serum in kutum (Rutilus frisii kutum)

In this study, ionic parameters (Na+, K+, Mg+2, and Ca+2) and metabolite factors (cholesterol, total protein, and glucose) of serum and their interrelationships were detected in 48 specimens of kutum (Rutilus frisii kutum) captured during spawning migration. Results indicated that values of Na+, Ca+2, K+, and Mg+2 revealed the highest to the lowest content in blood serum of kutum, respectively. Cholesterol concentration was higher than glucose and the latter was estimated more than total protein. Na+ was positively correlated with Mg+2 (P < 0.01), whereas it shows reversed correlations with glucose (P < 0.01) and pH (P < 0.05). Mg+2 had a significant and positive relationship with the ratio of Na+ to K+ and Ca+2 to K+ ratio (P < 0.05) while it represented a reverse correlation with pH (P < 0.01) and glucose (P < 0.05). The correlation between the ratio of Na+ to K+ and Ca+2 to K+ ratio was positive (P < 0.01) and Ca+2 concentration correlated positively with total protein (P < 0.05). Concerning to the relationships between ionic and metabolite factors on reproductive cycle, acid–alkaline balance, and growth and osmoregulation in kutum, the results deduced in the present trail might improve reproductive and cultivation management of this valuable species.