title: Preparation of teaser bulls and steriods-implanted steers and their effectiveness in detecting estrus.
mesh_terms: D000735:Androstenedione / Q000494:pharmacology; D000818:Animals; D001947:Breeding / Q000379:methods*; D002369:Castration; D002417:Cattle; D004343:Drug Implants; D004958:Estradiol / Q000494:pharmacology; D004972:Estrus Detection / Q000379:methods*; D005260:Female; D012739:Gonadal Steroid Hormones / Q000494:pharmacology*; D007989:Libido / Q000187:drug effects; D008297:Male; D010413:Penis / Q000601:surgery*; D013739:Testosterone / Q000494:pharmacology
chemical_list: D004343:Drug Implants; D012739:Gonadal Steroid Hormones; D013739:Testosterone; D000735:Androstenedione; D004958:Estradiol