Temporal Influence of Spawning on Serum Biochemical Parameters in Brown Trout Salmo trutta (Teleostei: Salmonidae)

University of Sarajevo, Department of Biology, Faculty of Science, Zmaja od Bosne 33-35, Sarajevo, Bosnia and Herzegovina


Suljević, D., A. Alijagić and E. Islamagić, 2017. Temporal infl uence of spawning on serum biochemical parameters in brown trout Salmo trutta (Teleostei: Salmonidae). Bulg. J. Agric. Sci., 23 (3): 485–490

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

Key words: brown trout; spawning; biochemical parameters; serum electrolytes; glucose
Abbreviations: AST – aspartate aminotransferase; cPG – carp pituitary gland; FOM – final oocyte maturation; FSH – follicle-stimulating hormone; GnRH – gonadotropin-releasing hormone; GPR54 – G protein-coupled receptor-54; GSI – gonadosomatic index; GTH – gonadotrophic hormones; hCG – human chorionic gonadotropin; KiSS – kisspeptin or metastin, protein; LH – luteinizing hormone; VLDL – very low-density lipoproteins; Vtg – vitellogenin

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