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Influence of Sperm Concentration, Initial Fructose Level, and Initial Per Cent Motility on the Fructolytic Activity of Bovine Semen¹

Department of Physiology and Pharmacology, New York Medical College, Flower and Fifth Avenue Hospitals, New York, N. Y.

R. L. Murphree

UT-AEC Agricultural Research Laboratory, Oak Ridge, Tennessee

ABSTRACT

Three semen characteristics–sperm concentration, initial fructose level, and initial per cent motility–were measured in 262 semen specimens collected by electroejaculation from ten Hereford bulls, and fructose utilizations were determined after 20, 40 and 60 min. of incubation at 37° C. The zero-, first- and second-order partial and multiple correlations were calculated from the data on total, among-bulls, and ejaculates-within-bulls bases. Each of the three semen characteristics, independent of the other two, was correlated (P<0.01) with fructolysis on within-bulls bases. Multiple correlations of the three semen characteristics with fructolysis were significant (P<0.01) on within-bulls bases. Multiple covariance analysis showed no significant among-bulls differences in fructolysis, indicating that, in this system, differences in fructose utilization may be accounted for by differences in sperm concentration, initial fructose level, and initial per cent motility.

¹ Published with the approval of the Director, Tennessee Agricultural Experiment Station, Knoxville. This study was completed under contract No. AT-40-1-GEN-242 between the University of Tennessee and the Atomic Energy Commission.