title: Prepartum and postpartum levels of progesterone and estradiol in beef heifers fed two levels of energy.
mesh_terms: D000821:Animal Feed; D000818:Animals; D001835:Body Weight; D002417:Cattle / Q000378:metabolism / Q000502:physiology*; D004734:Energy Metabolism; D004958:Estradiol / Q000097:blood*; D004971:Estrus; D005260:Female; D049590:Postpartum Period; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000097:blood*
chemical_list: D011374:Progesterone; D004958:Estradiol