Estrous cycle - Wikipedia Estrus or oestrus refers to the phase when the female is sexually receptive (" in heat " in American English, or " on heat " in British English) Under regulation by gonadotropic hormones, ovarian follicles mature and estrogen secretions exert their biggest influence
ESTRUS中文 (简体)翻译：剑桥词典 - Cambridge Dictionary Suckling prevents cows from entering estrus In a number of mammals, the vagina may be sealed when the animal is not sexually receptive and only open during oestrus In many mammals, oestrus lasts a short time: just 48 hours in the mountain goat
Estrus | Heat Detection, Ovarian Activity Hormonal Changes | Britannica Estrus, the period in the sexual cycle of female mammals, except the higher primates, during which they are in heat—i e , ready to accept a male and to mate One or more periods of estrus may occur during the breeding season of a species
ESTRUS Definition Meaning - Merriam-Webster The meaning of ESTRUS is a regularly recurrent state of sexual receptivity during which the female of most mammals will accept the male and is capable of conceiving : heat; also : a single occurrence of this state
Estrus Cycle - an overview | ScienceDirect Topics Ruminants such as the cow and ewe experience short estrus periods of 29 h or less while species such as the sow and mare show estrus periods of several days The cow and sow are polyestrous, with a number of estrous cycles occurring each year, whereas the mare and ewe are seasonally polyestrous
動情週期 - 維基百科，自由的百科全書 中國數字科技館 2018-08-04 [2024-12-13] （原始內容 存檔 於2025-01-25） （中文） ^ Geoffrey Miller; et al Ovulatory cycle effects on Tip earnings by lap dancers: economic evidence for human estrus? (PDF) Evolution and Human Behaviour 2007年4月, (28): 375–381 [2010-03-26] （原始內容 存檔 (PDF)於2020-11-12）
ESTRUS在剑桥英语词典中的解释及翻译 - Cambridge Dictionary The female panda is in estrus for only 24 to 48 hours per year Just before the mother seal departs for the sea, she comes into oestrus and mates