The Preferential Utilization by Bull Spermatozoa of Glucose as Compared to Fructose

Abstract

Egg yolk has a sparing effect on fructose utilization by bull spermatozoa during anaerobic incubation at 37 or 46.5°C. This sparing effect can be explained by the occurrence of glucose in egg yolk and the utilization of glucose in preference to fructose by bull spermatozoa. At a ratio of 85 parts of fructose to 15 parts of glucose, an equal utilization of fructose and glucose by washed spermatozoa may be expected during incubation at 37° C. under nitrogen, if the initial level of TRS is approximately 0.67 mg. per 108 cells. © 1952, American Dairy Science Association. All rights reserved.