Red cell life span of white-tailed deer Odocoileus virginianus☆

Abstract 1. 1. The red cell survival of white-tailed deer as measured with DFP 32 is similar to that seen in the sheep and human, with destruction by senescence after a period of approximately 125 days. 2. 2. Under the environmental conditions of our experiment, there did not appear to be any deleterious effect on red cell survival due to variation in hemoglobin type or the ability of cells to sickle. 3. 3. Red cell survival in a guanaco was estimated to be 227 days, in an elk 149 days, in an aoudad 99 days, and in two sika deer, 149 and 159 days respectively.