Abstract
The effects of stimulation with the factorial combination of pulse waves of three wave lengths and three frequencies were compared to a modified sine wave for electroejaculation of the bull. The 4 msec pulse wave length and frequencies of 50 or 80 pulses/sec produced a higher incidence of penile protrusion and initiation and completion of ejaculation more quickly and at lower voltages. However, the sine wave treatment was equal or superior to any of the nine pulse wave treatments for all criteria studied. Seminal characteristics averaged over treatments were for first and second ejaculates, respectively; pre-sperm fluid volume, 2.71 and 3.49 ml; sperm-rich fluid volume, 5.24 and 6.00 ml; sperm-rich fluid spermatozoal concentration, 596 and 334 X 106/ml; and progressive motility 52.9 and 59.1%. Copyright © 1975. American Society of Animal Science . Copyright 1975 by American Society of Animal Science.