title: Effect of oestrogen on oestrous behaviour and its variation with season in the ewe.
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D001565:Benzoates / Q000494:pharmacology; D001681:Biological Assay; D002369:Castration; D004958:Estradiol / Q000494:pharmacology; D004967:Estrogens / Q000494:pharmacology* / Q000502:physiology; D004971:Estrus / Q000187:drug effects*; D005260:Female; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology; D012621:Seasons; D012726:Sexual Behavior, Animal / Q000187:drug effects; D012756:Sheep / Q000502:physiology*
chemical_list: D001565:Benzoates; D004967:Estrogens; D011374:Progesterone; D004958:Estradiol