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Oestrous Cycle - Anatomy & Physiology (view source)
Revision as of 10:02, 10 September 2008
, 10:02, 10 September 2008→Oestrus
=== Oestrus ===
=== Oestrus ===
* The period where the female will accept the male for copulation.
* The onset and end of oestrus are the only stages of the oetrous cycle that can be accurately measured. They are therefore used to determine cycle length.
* Female seeks out the male and 'stands' to be mounted.
* Uterine, cervical and vaginal glands secrete increased amounts of mucus.
* Vaginal epithelium and uterine endometrium becomes hyperaemic and congested.
* Cervix is relaxed
* Ovulation occurs during this phase in all domestic species except the cow.
** The cow ovulates ~12 hours after the end of oestrus.
* Ovulation is spontaneous in all domestic species except the cat, rabbit and camelids. In these species it is induced by the act of copulation.
* During pro-oestrous and oestrus there is follicular growth with no functional corpora lutea present on the ovary (aka follicular phase).
* The main ovarian hormone production is Oestrogen.
=== Metoestrus ===
=== Metoestrus ===