Observations on treatment of the regularly returning cow by enucleation of the corpus luteum

Extract

Much has been recorded in the literature on diagnosis and treatment of infertility in cattle, with particular reference to brucellosis, trichomoniasis, vibriosis, and, more recently, leptospirosis. A careful search, however, reveals little information upon the cow which, for no apparent reason, continues to return to the bull at regular intervals.