Estimates of body water content in normally grown baboons during the first postnatal month

Water contents of various body compartments were estimated within 9 h of birth in eight baboon neonates and at a mean of 29 days (27-32 days) in seven baboons. All animals were normally grown and delivered spontaneously at term. There was no difference in mean antipyrine space, corrected bromide space, intracellular water, interstitial water, and plasma and blood volumes observed on day 1 and day 29. Mean estimate of red cell volume was lower on day 29 than on day 1.