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Effect of Whole-Body -Irradiation on the Characteristics and Metabolism of Bull Semen during the Early Post-Irradiation Period¹

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

R. L. Murphree

University of Tennessee—Atomic Energy Commission, Agricultural Research Laboratory, Oak Ridge, Tennessee

ABSTRACT

Whole-body -radiation of mature Hereford bulls with a single dose of 400 r from a cobalt⁶⁰ source did not result in any apparent change in semen characteristics (sperm concentration and initial fructose level) or in sperm activity (initial motility and fructolytic activity) during a 3-wk. post-irradiation period. Evidently, those cells which were past the radiosensitive spermatogonial stage at the time of irradiation were metabolically unaffected.

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.

² The senior author was an Oak Ridge Institute of Nuclear Studies Research participant at the time this study was conducted.