EN
In this study, the effects of xylazine on serum levels of triiodothyronine (T3), tetraiodothyronine (T4), insulin (INS), and glucagon (GN) in dogs were investigated. The dogs before injection were used as control group (0 h). The dogs were injected with xylazine at 3 mg/kg, then blood was collected from the peripheral veins at 0.5, 2, 8, 24, 48, 72, and 120 h after the injection. Serum T3, T4, INS, and GN were measured by ELISA. The results revealed that the T3 level decreased in serum 0.5 h after the injection (P<0.05), while the change in T4 was not significant. The secretion of INS increased 8 h after the injection (P<0.05). The GN level increased 2 h and 8 h after the injection (P<0.05). However, all of these changes returned to the norm after 24 h.