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Oestrous Cycle - Anatomy & Physiology (view source)
Revision as of 12:30, 10 September 2008
, 12:30, 10 September 2008→Endocrine Changes During the Oestrous Cycle
=== Endocrine Changes During the Oestrous Cycle ===
=== Endocrine Changes During the Oestrous Cycle ===
* Biphasic secretion of FSH with surges every 10-12 days.
** One surge after ovulation and a second in mid-late Dioestrus (~10 days before the next ovulation).
* This increase in FSH secretion is unique to the mare.
** Primes the development of a new generation of follicles, one of which will ovulate during the next oestrus.
* The pattern of LH secretion is also unusual.
** No dramatic LH surge prior to ovulation.
** LH gradually increases and elevated levels then persist for 5-6 days either side of ovulation.
* Oestrogens reach peak values during oestrus.
* Progesterone concentrations follow the changes of the corpus luteum closely.
= Links =
= Links =
[[Oestrous_Cycle_-Pharmacological_Manipulation_of_Oestrous_Cycles_-_Anatomy_%26_Physiology|Pharmacological Manipulation of Oestrous Cycles]]
[[Oestrous_Cycle_-Pharmacological_Manipulation_of_Oestrous_Cycles_-_Anatomy_%26_Physiology|Pharmacological Manipulation of Oestrous Cycles]]