Ray, D E Oestrous response of ovariectomized beef heifers to oestradiol benzoate and human chorionic gonadotrophin. [electronic resource] - Journal of reproduction and fertility Dec 1965 - 329-35 p. digital Publication Type: Journal Article ISSN: 0022-4251 Standard No.: 10.1530/jrf.0.0100329 doi Subjects--Topical Terms: AnimalsCastrationCattle--physiologyChorionic Gonadotropin--pharmacologyEstradiol--pharmacologyEstrus--drug effectsFemalePregnancy