title: The influence of dietary energy intake on progesterone concentrations in beef heifers.
mesh_terms: D000818:Animals; D001835:Body Weight; D002417:Cattle / Q000378:metabolism*; D003338:Corpus Luteum / Q000502:physiology; D004032:Diet; D004734:Energy Metabolism; D004973:Estrus Synchronization; D005260:Female; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*
chemical_list: D011374:Progesterone