Effect of Adrenalectomy and Cbrticoid Replacement on Lactational Performance in Rats.

Abstract
Sprague-Dawley-Rolfsmeyer rats were adrenalectomized on day 4 of lactation and lactation was maintained by daily subcutaneous injections of corticosteroids from day 4 to 19. Data suggest that requirements for normal lactation in rats are 250 to 500 [mu]g hydrocortisone acetate or equivalent in gluco-corticoid activity and 250 [mu]g desoxycorticosterone acetate or equivalent in mineralocorticoid activity. Either steroid alone at these levels was unable to support lactation but combination was effective.

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