Farzane Noori - Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
Mohammad Reza Emami - Department of Clinical Sciences, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
Peyman Nakhaee - Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
Mehrdad Mohri - Department of Clinical Sciences, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran

Isoflurane and sevoflurane are among the newer inhalant anaesthetics that have shown fewer adverse effects than their older counterparts; as a result, they are used more frequently in avian practice. Determination of the differences between induction and recovery time of isoflurane and sevoflurane in pigeons (Columba Livia Domestica). In addition, the anaesthetic effects of each on their physiological parameters, hematocrit and plasma chemistry values were evaluated.  A total of ۲۰ male pigeons were allocated to two groups of ۱۰ undergoing anaesthesia by ۵% isoflurane and ۶% sevoflurane in oxygen in a crossover, randomised design. Three data sets were collected pre-anesthesia, at the end of anesthesia with the cessation of medications, and ۲۴ hours post-anesthesia. Different physiological and biochemistry parameters were evaluated.  It was shorter in pigeons treated with isoflurane, and they experienced a longer RT than the other group. No significant difference was observed between isoflurane and sevoflurane regarding RT. HR decreased in both groups at the end of anesthesia, which was more significant in pigeons anesthetized with isoflurane. Although RR and T decreased at the end of anesthesia in both groups, they were lower within the group treated with sevoflurane. Both anesthetics decreased plasma biochemistry factors in most of the samples except creatinine phosphokinase and albumin, which almost returned to the initial state ۲۴ h post-anesthesia.  Throughout, however isoflurane considers the most commonly inhaled anesthetic in avian practice, sevoflurane is recommended for anesthesia in pigeons.

Anesthesia, Avian, Isoflurane, Pigeon, Sevoflurane