Abstract
Summary
Reserpine at levels of 30 μg/100 g/day and above depressed thyroidal-I131 release rate in chickens and caused body weight losses. At 15 and 30 μg/100 g/day, thyroxine secretion rate (TSR) was reduced in pigeons with depression in body weight and feed intake. No level of reserpine was found which would inhibit TSR without depressing feed intake. It is suggested that depression of thyroid activity at higher levels of reserpine is secondary to depression in food intake.
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