This study was performed on 80 male 14-day-old Coturnix coturnix japonica breed quails. The quails were divided into 8 groups with 10 animals in each as I control and 7 trial groups. While the control group was fed a commercial basal ration, groups 2-8 received, respectively, 2.5 g/kg feed hydrate sodium calcium aluminosilicate (HSCAS). 5.0 g/kg feed HSCAS. 10.0 g/kg feed HSCAS, 2.5 ppm aflatoxin (AF B-1 78.30%, AF B-z 14.60%, AF G(1) 4.50%, AF G(2) 2.60%); 2.5 ppm AF with 2.5 g/kg feed HSCAS, 2.5 ppm AF with 5.0 g/kg feed HSCAS, and 2.5 ppm AF with 10.0 g/kg feed HSCAS, respectively, for 21 days. At the end of the trial, blood samples were taken from the animals and triiodothyronine (T-3), thyroxine (T-4), thyrotrophin (TSH) and testosterone levels in the blood were measured. Statistically significant increases were detected in T3 levels in groups 3 and 4 and significant decreases in groups 5 and 6, while there were significant increases in T4 levels in groups 2, 4, 5, 7 and 8 and significant decreases in blood testosterone levels in all trial (groups 2 to 8) groups compared to the control (group 1).