Question

what is the oestrus cycle.....???

Answer 1

Oestrus Cycle

The cycle of reproductive activity shown by most sexually mature nonpregnant female mammals except most primates (compare menstrual cycle). There are four phases: (1) pro-oestrus (follicular phase) – Graafian follicles develop in the ovary and secrete oestrogens;(2) oestrus (heat) – ovulation normally occurs, the female is ready to mate and becomes sexually attractive to the male;(3) metoestrus (luteal phase) – corpus luteum develops from ruptured follicle;(4) dioestrus – progesterone secreted by corpus luteum prepares uterus for implantation.

The length of the cycle depends on the species: larger mammals typically have a single annual cycle with a well-defined breeding season (they are described as monoestrous). The males have a similar cycle of sexual activity. Other species may have many cycles per year (i.e. they are polyoestrous) and the male may be sexually active all the time.

Answer 2

Answer:

The oestrous cycle (U.S: estrous cycle) is the reproductive system in most mammals.

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