the period when the female is fertile and receptive to the male. Also called heat.
(heat) that period when the female is receptive (will stand for mating) to the male.
The period of mating activity in the female mammal. Same as heat.
The period when a female is receptive to mating. Synonymous with heat.
heat, the time a female may mate and become pregnant
A period of time when female mammals will acccept males and mating occurs. In specific terms, when ovulation occurs. At this time, the pituitary output is predominantly LH and the newly formed corpus luteum in the ovary is producing large quantitites of progesterone.
"Heat"; a recurrent period of varying length, during which the mare produces a watery secretion from the genital tract, becomes sexually receptive to the stallion, and ovulates
period of sexual receptivity in female mammals (except for humans and bonobos).
female mammals typically are receptive to mating with a male only when reproductive hormones and other physiological changes allow her to be receptive. Part of this process involves the release of an egg from the ovary (ovulation) which can then be fertilized by the male's sperm. Many of the larger mammals mate only once per year, thus the females reach the state of estrus just once, when they mate. Many small mammals, such as the mice, mate more than once each year, thus the females reach estrus more than once each year.
readiness to mate
(es´ truss) [L. oestrus: frenzy] • The period of heat, or maximum sexual receptivity, in some female mammals. Ordinarily, the estrus is also the time of release of eggs in the female.
period of maximum sexual receptivity in female, usually related to the release of eggs (heat)
The period of ovulation and sexual activity in nonhuman female mammals; commonly referred to as being "in heat."
The phase of the estrous cycle when a cat is fertile (commonly called "heat").
phase of the reproductive cycle during which a female is capable of a mating that may result in offspring; often referred to as "heat"
(animal science) The recurrent, restricted period of sexual receptivity in livestock. Non-pregnant cows and heifers usually come in heat 18 to 21 days following their previous estrus.
applies to nonhuman mammals: a state or period of heightened sexual arousal and activity
Period when a female is receptive to mating; characterized by changes in the sex organs; heat (usually midway through what humans call the menstrual cycle). EUKARYOTES â€“ An organism composed of one or more cells containing visible nuclei and other organelles.
the period of maximum sexual receptivity in female mammals, usually also the time of release of the eggs
The period of time which a female mammal is receptive to breeding.
the period of sexual receptivity in the female; estrus usually lasts about 6 to 24 hours in the cow when she usually stands to be mounted by other cows or a bull. br
the period of time when a female is receptive to mating.
Period in which the female rodent is fertile and acceptable to breeding
Active portion of the reproductive cycle where the female becomes receptive to the male.
The period of time when the female is sexually receptive to the male, Usually 24-36 hours, also known as "heat".
the period in the cycle of female mammals at which they are often attractive to males and receptive to mating
"Heat," reproductive period when mare will accept stallion. Cycle lasts 19 to 26 days., the average being 21 days
The period of fertility. The signals indicating this condition.
the time when a female animal is fertile and receptive to a male; also known as a heat period.
The period of sexual receptivity of a female mammal.
Associated with ovulation; a mare usually is receptive to breeding during estrus. Referred to as "horsing."
The periodic state of sexual excitement in the female of most mammals, excluding human beings, that immediately precedes ovulation and during which the female is most receptive to mating; heat.
The heat period - the time during the reproductive cycle when the queen (female) displays interest in mating. Queens may rub against objects, crawl with their belly close to the floor, roll and vocalize (also spelt oestrus)
The recurrent, restricted period of sexual receptivity in cows and heifers. Nonpregnant cows and heifers usually come into heat 18 to 21 days following their previous estrus.
The period of time when an animal is "in season" or "in heat". This is the breeding period.
Receptive to being bred. This physiological and psycholocmal state is caused primarily by high circulating levels of estrogen produced by the ovarian follicles just prior to ovulation.
The ewe is receptive (can mate with the ram) and can conceive (become pregnant).
In mammals, the period in the cycle when the female is sexually receptive (in heat).
The period when mating may occur.
A two to four day period when doe are capable of breeding. It is only during this time that a doe will allow a buck to approach her.
The period in the estrus cycle of a female mammal when she is usually attractive to males and receptive to mating.