HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Boyd, L. J. Articles by van Demark, N. L. Search for Related Content PubMed Articles by Boyd, L. J. Articles by van Demark, N. L.

Spermatogenic Capacity of the Male Bovine. I. A Measurement Technique¹

Department of Dairy Science, University of Illinois, Urbana

ABSTRACT

With the spread of artificial insemination and the improvement in methods of preserving semen, has come an ever-increasing demand for the semen of desirable bulls. To date these demands have been met largely by increasing the rate of dilution of the semen collected. Even with maximum dilution, the demands for semen from a particular bull can not always be met. Increases in the amount of available semen, under present methods, will have to be obtained largely by increasing the number of sperm taken from the bull. There is little evidence in the literature indicating the rate of sperm formation in the bull, or the optimum rate of withdrawing semen. Such information is needed to establish guides for the colleetion of semen from bulls being used for artificial insemination.

Kirillov (3), from a comparison of dairy bulls on three frequencies of semen collection, recommended that two collections per day were probably the optimum number.

¹ Data for this paper were taken from a thesis submitted by the senior author to the Graduate College of the University of Illinois in partial fulfillment of the requirements for the Doctor of Philosophy degree.

² Present address: Dairy Department, University of Tennessee, Knoxville.