1368 POSTNATAL MOBILIZATION OF THE NEONATAL TISSUE WATER RESERVOIR: CONTRASTS BETWEEN RABBITS AND RATS

We measured total body H2O content (ml/gm fat free dry weight) in neonatal rats from birth to 72 hours of age and compared these data with our earlier measurements in rabbits. At birth, H2O (in rats) was inversely correlated with birth weight (BW) (r=-0.408, p=.007) and it fell significantly between birth and 24 h (p