Pharmacological suppression of prolactin release has been shown to have a stimulatory effect on ovarian activity during the post-partum period in some species other than the bovine. This trial was designed to test the effect of treatment with bromocryptine on ovarian function after calving in suckling beef cows. Ten Mashona cows received daily injections of either bromocryptine or saline (controls) for a 10 day period approximately 40 days after calving. Estimated milk yield was depressed by 10,2%when compared with controls. Treatment had no apparent effect on the duration of post-partum anoestrus or the secretion of progesterone during the post-partum period.