Abstract
The effect of starvation on the rate of clearance of yeast cells was studied in 5-week-old chicks. Phagocytic and bacteriocidal activities were also investigated in the heterophils taken from abdominal cavities of chicks starved for 24 or 48 hours. The changes in peripheral leucocyte counts and plasma cortisol level indicate that chicks starved enough to be analysed of clearance rate, phagocytic and bacteriocidal activities. The phagocytic activity of heterophils assessed by per cent inhibition of 3H-uridine uptake by S.cerevisiae was unchanged or activated by starvation. In contrast with phagocytic activity, the rate of clearance in chicks and the bacteriocidal activity of heterophils were lowered by starvation. The extents of the reduction in clearance rate and of the inhibition in bacteriocidal activitywere paralleled by duration of starvation. It is concluded that the inhibitory effect of starvation on the bacteriocidal activitiy of heterophils may be a cause of the reduction in clearance rate.
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