A diabetes insipidus-like syndrome in the intact Yucatan miniature boar following implantation of desoxycorticosterone-acetate (DOCA).

A syndrome of polydipsia and polyuria is described in the intact adult Yucatan miniature boar following implantation of silicone rubber strips impregnated with desoxycorticosterone-acetate (DOCA). Water intake was significantly greater than control 5 days post-DOCA. Urine output was significantly greater than control 7 days post-DOCA, and urine osmolality was significantly decreased 8 days post-DOCA. Serum potassium was significantly less than control 24 hr post-DOCA, and serum sodium was consistently and significantly greater than control by 1 week post-DOCA. As suggested in the dog, the increase in water turnover following DOCA administration in the pig is initiated by an increased thirst followed by an increase in urine output.