2.6. Propofol-induced sleep in chicks
Twenty seven chicks were randomly divided into three
groups of nine birds each. The chicks were injected with
propofol at 5, 10 or 20 mg/kg. The latency to onset of loss
of righting reflex (sleep) and its duration after the propofol
injection were recorded for each chick [34,39]. The sleep
time was estimated from the time of loss of the righting
reflex when the chick was placed on one side or from the time of sternal recumbency with closed eyelids to the time
of standing unaided