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Oestrous Cycle Pharmacological Manipulation - Anatomy & Physiology (view source)
Revision as of 10:08, 12 September 2008
, 10:08, 12 September 2008→Pharmacological: Progestogens
* Used alone or in conjuction with other hormones.
* Used alone or in conjuction with other hormones.
* Used to induce oestrus in the anoestrus ewe during the non-breeding season and for oestrus synchronization in cyclic ewes.
* Used to induce oestrus in the anoestrus ewe during the non-breeding season and for oestrus synchronization in cyclic ewes.
* Progestogens are now used more commonly than progesterone itself. These include:
* To be effective, treatment must last for the length of the normal luteal phase (12-14 days).
* In the anoestrus ewe, progesterone withdrawal is complemented by follicle stimulating treatments such as eCG. This will stimulate oestradiol secretion due to its 'FSH-like' effect.
* Progestogens are now used more commonly than progesterone itself, because progesterone has a short-half life. These include:
** Fluorogestone acetate (FGA)
** Fluorogestone acetate (FGA)
** Medroxyprogesterone acetate (MAP)
** Medroxyprogesterone acetate (MAP)