Engineering Sciences, cilt.12, ss.271-276, 2017
Values of blood biochemistry are important for all animals in terms of health and welfare, providing knowledge of evidence in diseases. One of the most economically important fish species bluefin tuna-BFT (Thunnus thynnus L.) in aquaculture considering high prices in the related business. Accordingly, farmers care about fattening fishes and some analyses provide significant knowledge, especially blood analyses for them. In the study, blood samples were recovered from fishes (10 male and 12 female) in fattening farms at Ildır, Çeşme, İzmir province, East of Aegean Sea. Fork length and weight values were 140–180cm, and 40–80kg, respectively. Water quality parameters such as temperature, salinity, dissolved oxygen, pH and turbidity were indicated as 16–20oC, ‰ 35.7–38.2g L-1, % 6.9-7.8mgL-1, 36.8–38.2m. The research measured uric acid 4.32mg/100mL-1, creatinine 1.12mg/100mL-1, serum urea concentration 15.04mg/100mL-1), albumin 2.30g/100mL-1, globulin 2.56g/100mL-1, total protein 6.15g/100mL-1, serum glutamic oxaloacetic transaminase 178.24UL-1, serum glutamate pyruvate transaminase 141.52UL-1, alkaline phosphatase 54.26UL-1, g-glutamyl transferase 220.14UL-1, total cholesterol 272.04mg/100mL-1, triglycerides 320.75mg/100mL-1, high-density lipoprotein 88.68mg/100mL-1and low-density lipoprotein 180.18mg/100mL-1. Results during the fattened period in growing cages indicates that BFTs were under pressure and stress attacks because of unnatural habitats such as feeding, narrow area etc. in farm area. Also, males were more sensitive and undergo more stress than females.