Postnatal changes in the levels of 2,3-diphosphoglycerate, reduced glutathione and some enzyme activities in the erythrocytes of lambs

The concentration of 2,3-diphosphoglycerate, and the activities of the enzymes hexokinase, glucose-6-phosphate dehydrogenase, 6-phosphogluconate dehydrogenase, glutathione reductase and NADH-dependent methaemoglobin reductase in the erythrocytes of newborn and adult sheep were investigated. All the enzyme activities and the concentration of 2,3-diphosphoglycerate were found to be significantly greater in the erythrocytes of newborn lambs than in those of adult sheep.