Difference between revisions of "Oestrous Cycle - Anatomy & Physiology"
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=== Pro-Oestrus === | === Pro-Oestrus === | ||
| + | |||
| + | * The phase immediately preceding oestrus. | ||
| + | * Marked increase in reproductive activity. | ||
| + | * Follicular growth and regression of the corpus luteum of the previous cycle (in polyoestrous species). | ||
| + | * Uterus enlarges slightly | ||
| + | * Endometrium becomes congested and oedematous, glands show secretory activity. | ||
| + | * Vaginal mucous becomes hyperaemic. | ||
| + | ** Increase in cell numbers in the vaginal epithelium. | ||
| + | ** Superficial layers become cornified. | ||
| + | * The bitch shows external evidence: | ||
| + | ** Vulval oedema | ||
| + | ** Hyperaemia | ||
| + | ** Sanguinous vulval discharge | ||
=== Oestrus === | === Oestrus === | ||
Revision as of 09:56, 10 September 2008
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Introduction
Ovarian cycles are from oestrus to oestrus. Oestrus is the easily identifiable external marker.
Classification of Oestrous Cycles
Based on Vaginal Cytology
Pro-Oestrus
- The phase immediately preceding oestrus.
- Marked increase in reproductive activity.
- Follicular growth and regression of the corpus luteum of the previous cycle (in polyoestrous species).
- Uterus enlarges slightly
- Endometrium becomes congested and oedematous, glands show secretory activity.
- Vaginal mucous becomes hyperaemic.
- Increase in cell numbers in the vaginal epithelium.
- Superficial layers become cornified.
- The bitch shows external evidence:
- Vulval oedema
- Hyperaemia
- Sanguinous vulval discharge