Relationship of oestrogen and progesterone in oestrous behaviour of the ewe.
D000818:Animals; D004967:Estrogens; D030762:Estrous Cycle / Q000187:drug effects*; D004971:Estrus; D005260:Female; D011374:Progesterone / Q000494:pharmacology*; D012756:Sheep
D004967:Estrogens; D011374:Progesterone
ESTROGENS/effects; ESTRUS CYCLE/effect of drugs on; PROGESTERONE/effects; SHEEP