Knowledge of fish haematology can provide information supportive of a wide variety of uses. These studies have generally been used as an effective and sensitive index to monitor physiological and pathological changes in fish, especially in the management of endangered species such as Huso huso. In this study, 12 biochemical parameters in mature H. huso were measured. Serum samples of 40 H. huso (20 males and 20 females) were analysed, and their serum parameter values were determined as median (percentiles) in males and females, respectively: Na, 162.70 (160–164.75) and 141.10 (156– 144.9 mmol/l); K, 3.2 (2.75–3.35) and 3.1 (2.75– 3.85 mmol/l); Ca, 9.6 (7.8–11) and 9.7 (8.6–10.9 mg/dl); P, 14.7 (12.65–15.65) and 12.1 (11.25–13.95 mg/dl); glucose, 176 (124.5–234.5) and 173 (147.5–212 mg/dl); triglyceride, 770 (607.5–872) and 750 (664.5–842 mg/dl); bilirubin, 0.67 (0.575–0.825) and 0.61 (0.525–0.745 mg/ dl); TOP, 3.2 (2.85–3.45) and 3.6 (3–3.8 g/dl); albumin, 1.4 (1.3–1.6) and 1.6 (1.2–1.85 g/dl); cholesterol, 286 (202–289.5) and 239 (202–308 mg/dl); creatinine, 0.13 (0.11–0.14) and 0.11 (0.9–0.15 mg/dl) and BUN, 15.2 (12.3–17.6) and 17.7 (15.7–19.55 mg/dl). The concentration of P was significantly higher (P<0.05) in males than in females and levels of BUN and TOP in females was significantly higher (P<0.05) than in male fish.

Keywords