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 WISHART, D. F. Search for Related Content PubMed Articles by WISHART, D. F.

IDENTIFICATION OF STEROIDS OF HIGH ACTIVITY FOR CONTROL OF THE OESTROUS CYCLE IN THE DAIRY HEIFER

Recently, a small series of screening experiments have been conducted with a view to identifying synthetic steroids of high activity for control of the oestrous cycle in mature Friesian heifers. Five synthetic steroids and progesterone were tested in cyclical animals. The activity of the steroids was assessed by their ability to suppress both oestrus and ovulation following a series of daily injections. The steroids were all chosen on the basis of their biological activity profiles in conventional laboratory animal bioassays.

The synthetic steroids were: