Determining age- and sex-related changes in serum biochemical and electrolytes profile of beluga (Huso huso)

The age- and sex-related change of serum biochemical and electrolytes blood parameters of beluga (Huso huso) in culture conditions were investigated. Blood samples were obtained from 4-, 6-, 7- and 8-year-old beluga (n = 7 for each sex and age) reared in culture conditions. Alb, bilirubin and TOP levels in 7- and 8-year-old fish of both sexes were significantly higher (p < 0.05) than in 4- and 6-year-old fish. The mean values of Glc were significantly different (p < 0.05) in both sexes of 6-, 7- and 8-year-old cultured fish. However, the 8-year-old fish of both sexes had higher CHO and TGL levels than the others (p < 0.05). There were no significant differences (p < 0.05) among all electrolyte levels in the fish serum of both sexes. These results suggest that the blood parameters of beluga are affected by age- and sex-related factors. These findings provide some information for the environmental and aquaculture officials responsible for future decisions regarding the management and rearing of fish used for human purposes. © 2012 Springer-Verlag London Limited.