What is meant by estrus?
estrus, also spelled Oestrus, 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.
How do you spell the word estrus?
noun Zoology. Also es·trum [es-truhm], oestrus. the period of heat or rut; the period of maximum sexual receptivity of the female.
Is estrus the same as a period?
The menstrual cycle differs from the estrous cycle in that the follicular phase is significantly longer and there is shedding of the uterine endometrium in response to declining progesterone levels resulting in menses (menstruation).
What causes estrus?
As the follicle develops, estrogen is secreted by the ovary. The egg grows larger as more estrogen is secreted by the ovary. Estrogen causes estrus (“heat”) and contractions of the uterus to aid in transport of sperm.