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 Sykes, J. F. Search for Related Content PubMed Articles by Sykes, J. F.

Methods of Approaching the Problem of Infertility¹

Bureau of Dairy Industry, Agricultural Research Administration, United States Department of Agriculture

ABSTRACT

In the preceding discussions of infertility, the reader must have been impressed by the absence of concrete information which would enable dairymen to prevent or correct reproductive disturbances in cattle. While there is considerable information on the effect of genetic, pathological, nutritional and physiological factors on reproductive processes, the applicability of this information to the problem of infertility, as it is seen under farm conditions, has not been determined with any degree of certainty.

It has been shown, for instance, that several nutritional deficiencies interfere with reproduction under experimental conditons. These marked deficiencies do not occur frequently under practical conditions, however, and usually the condition of the animal indicates that its general nutrition was at fault before disturbances in reproduction are evident. How important then are the so-called marginal nutrient deficiencies as factors in infertility? This has not been determined. In the pathological field, for example, vaginitis is a condition that occurs very frequently in cattle, yet the causative organism is unknown.

¹ Based upon a paper presented in the symposium on Reproductive Problems of Dairy Cattle at the 43rd Annual Meeting.