title: Effects of zeranol on growth and ease of calf delivery in beef heifers.
mesh_terms: D000034:Abortion, Veterinary / Q000139:chemically induced; D000818:Animals; D001724:Birth Weight / Q000187:drug effects; D001835:Body Weight / Q000187:drug effects; D002417:Cattle / Q000254:growth & development / Q000502:physiology*; D004343:Drug Implants; D005260:Female; D011247:Pregnancy; D012118:Resorcinols / Q000627:therapeutic use*; D015029:Zeranol / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D004343:Drug Implants; D012118:Resorcinols; D015029:Zeranol