Evaluation of propofol-halothane anaesthesia in buffalo calves (Bubalus bubalis)

Propofol (4.0 mg/kg, i.v.) was used for induction of anaesthesia, which was further maintained by halothane. Halothane was disconnected after one and a half hour, thereafter oxygen was given for 5 min. The animals recovered from anaesthesia at 37:30±5:47 min after discontinuation of halothane. The respiratory rate increased significantly at peak effect of propofol and recovery. Plasma sodium and potassium levels were significantly elevated, and statistically significant reduction was seen in chloride level. Plasma glucose was significantly higher at recovery. There was significant increase in heart rate after propofol administration, thereafter, continuous fall in heart rate was observed during halothane administration. However, the heart rate elevated after halothane's disconnection and then came close to the base value. A statistically significant fall was seen in mean arterial pressure (MAP) after halothane administration. The central venous pressure (CVP) significantly decreased after propofol administration but increased significantly during halothane administration.