THE EFFECT OF TOTAL AND SUBTOTAL ADRENALECTOMY ON THE RENAL AND EXTRA-RENAL RESPONSE OF THE DOMESTIC DUCK (ANAS PLATYRHYNCHUS) TO SALINE LOADING1

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Abstract
Total adrenalectomy of the saline loaded domestic duck resulted in complete obliteration of the extra-renal excretory response. Subtotal adrenalectomy resulted in a diminished response to the saline load compared to similarly treated intact control birds. The maintenance of adrenalectomized ducks on cortisol restored the extra-renal excretory pattern to near normal levels. The significance of this, and previous investigations of the extra-renal process i n marine birds, is discussed.