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  • Title: Effects of corticosterone treatment on responses to fasting in Japanese quail.
    Author: Wall JP, Cockrem JF.
    Journal: Comp Biochem Physiol A Mol Integr Physiol; 2009 Oct; 154(2):211-5. PubMed ID: 19539044.
    Abstract:
    Plasma concentrations of corticosterone, a glucocorticoid hormone, have been reported to increase during fasting in some species of birds. Although Japanese quail are widely used in laboratory studies, corticosterone responses to fasting have not been described for this species. We therefore investigated the effects of 24h of fasting on plasma corticosterone concentrations in quail. Previous work has shown that the corticosterone response to handling in quail may be affected by treatment with corticosterone, so we also measured corticosterone responses to 24h of fasting in quail treated with corticosterone in their drinking water, and determined the effects of corticosterone on food intake immediately after a fast. Plasma corticosterone concentrations were unaffected by 24h of fasting in controls and in three out of four groups of birds with varying corticosterone intakes. Fasting in birds can be divided into three phases, and our results suggest that quail remained in phase I during the 24h fast. Food intake in the 3h immediately after fasting was higher in four groups of birds with varying corticosterone intakes than in the control group, and was greatest in quail with the highest corticosterone intake. The current results suggest that corticosterone can stimulate food intake in quail following a period of food deprivation.
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