[Correction of hypovolemia in piglets aged 3 and 28 days]

It is shown that restoration of plasma volume in 3-day-old pigs 6-12 hours after a 33% blood loss is a part of fluid elimination from the body as it occurs due to transfer of interstitial and, probably, intracellular liquid into the circulation and is accompanied by activation of diuresis. Activation of this process is not participated neither by hydrocortisone nor ACTH. Vasopressin and aldosterone have a negative effect on intravasation of interstitial fluid.