The study of Anderogenic changes of some immunity parameters in Oncorhynchus mykiss

The purpose of this study is determining of some immunity and blood serum parameters in brood stock and grower fish before and after of stripping to evaluate the effect of breeding physiological changes on immunity and serum indexes. In this study 15 male trout fish (Oncorhynchus mykiss) including 5 in the stage of grower, 5 before stripping and 5 after stripping randomly were considered. Blood samples of brood stock and grower fish after anesthesia by Dianthus caryophyllus extract were collected from a commercial farm in Haraz and sent to the laboratory. Laboratory results showed that there is a significant difference in glucose concentration of grower fish before and after stripping (P0.05).Also, comparison of average osmolality in all fish showed that negligible difference is 5%.Kortizol hormone concentration after stripping compare with other fish showed a significant difference(P