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The Technique of Electroejaculation and Its Use in Dairy Bulls¹

Department of Dairy Husbandry, University of Minnesota, St. Paul

ABSTRACT

Evidence has been presented which indicates that it is possible by electrical stimulus to collect semen from some bulls which are either unable or unwilling to serve an artificial vagina. There have been no adverse effects or unfavorable associations in bulls collected from by electroejaculation. The semen so obtained was generally of greater volume but of lower density. However, the total numbers of spermatozoa were comparable to an ejaculate obtained by an artificial vagina.

Electroejaculation may serve as a valuable adjunct to the artificial vagina as a means of collecting semen in artificial insemination centers, especially for bulls which are difficult to collect semen from by means of the artificial vagina.

¹ University of Minnesota Scientific Journal Series Paper No. 3108, Minnesota Agricultural Experiment Station.