TEMPORAL INFLUENCE OF SPAWNING ON SERUM BIOCHEMICAL PARAMETERS IN BROWN TROUT SALMO TRUTTA (TELEOSTEI: SALMONIDAE)

Andi Alijagić, Erna Islamagić, Damir Suljević

Abstract: In this study were analyzed biochemical parameters in a serum of brown trout (Salmo trutta) during and post spawning. For this purpose 25 fish in the spawning (Group I), 21 fish post-spawning (Group II) and 33 control fish (Group III) were used. Research has shown that during spawning significant reduction in growth occurs, as well as mass loss, particularly in females. Significant positive correlation between the total length and mass has been found. For all biochemical parameters between the three groups significant differences were found (p<0.05). We have not found significant differences in the values of serum
glucose, cholesterol and chloride between Group I and II; however, protein, triglycerides, AST, sodium, potassium and calcium values were statistically significant (p<0.05). For glucose, AST and calcium values no significant differences between Group I and Group II were established. During spawning glucose, AST and calcium values were lower, while other biochemical parameters
were increased.

Keywords: biochemical parameters; brown trout; glucose; serum electrolytes; spawning

Date published: 2017-07-07