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Oestrous Cycle Pharmacological Manipulation - Anatomy & Physiology (view source)
Revision as of 09:30, 12 September 2008
, 09:30, 12 September 2008→Pharmacological: Progestogens
** Altrenogest
** Altrenogest
* These can be used in a number of ways:
* These can be used in a number of ways:
1. To stimulate the onset of cyclic activity.
1. '''To stimulate the onset of cyclic activity'''
* Administer 0.044mg/Kg mixed in with the feed for 10 days and then stop.
* Administer 0.044mg/Kg mixed in with the feed for 10 days and then stop.
* Give in the late transition period from anoestrus to cyclic activity when follicles are present.
* Give in the late transition period from anoestrus to cyclic activity when follicles are present.
* Better results when combined with increased lighting.
* Better results when combined with increased lighting.
2. To suppress oestrus
2. '''To suppress oestrus for an event'''
* Feed for 15 days at 0.044mg/Kg
* Feed for 15 days at 0.044mg/Kg
3. To suppress oestrus in mares with prolonged oestrus
3. '''To suppress oestrus in mares with prolonged oestrus'''
4. To control the time of oestrus for effective use of the stallion.
4. '''To control the time of oestrus for effective use of the stallion'''
* Feed for 15 days, then stop.
* Feed for 15 days, then stop.
* Mare should come into oestrus 2-3 days later.
* Mare should come into oestrus 2-3 days later.