PRIMARY QUANTITATIVE CHANGES IN HEMOGLOBIN IN RABBİT BLOOD DURING HYPOXIA AND PHYSICAL EXERTION IN EARLY POSTNATAL ONTOGENESIS

Abstract

It has been shown that severe hypoxia, a 20-minute stay in a pressure chamber in a nitrogen medium with 5% oxygen, causes significant quantitative changes in hemoglobin in the blood of 3- month-old rabbits at the beginning of the experiment. Rigid binding of animals to the platform in the supine position (immobilization) for an hour does not lead to a significant change in the hemoglobin level. A 10-minute involuntary run in a wheel (treadmill), a 20-minute severe hypoxia followed by a involuntary run in a treadmill have an effective influence on a level of hemoglobin.These reactions in some cases are of a phase nature: the primary decrease in hemoglobin content is replaced by its increase, and under running load, the primary increase in hemoglobin content is replaced by its decrease. It is assumed that these changes may have an adaptive value in the regulation of the respiratory function of hemoglobin.