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Oestrous Cycle Pharmacological Manipulation - Anatomy & Physiology (view source)
Revision as of 09:46, 12 September 2008
, 09:46, 12 September 2008→Progesterone Releasing Intravaginal Device (PRID)
==== Progesterone Releasing Intravaginal Device (PRID) ====
==== Progesterone Releasing Intravaginal Device (PRID) ====
* Stainless steel coil covered with an inert elastomer incorporating 1.55g of progesterone.
* Placed in the vagina using a speculum.
* Whilst in place, progesterone is absorbed to produce plasma concentrations that mimic maximum levels at dioestrus.
* When removed after 12 days, the cow will come into oestrus in 2-3 days.
* Some may also contain Oestradiol Benzoate.
==== Controlled Internal Drug Release Device (CIDR) ====
==== Controlled Internal Drug Release Device (CIDR) ====