PROGESTERONE 150 MG/ML / ALTRENOGEST 18 MG/ML
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Considering the unpredictability of mares as regards the timing of their ovulation, horse owners and managers often have a need to cause a mare to enter into estrus and ovulate within a specific time period. Reasons for this can include the intent to use frozen semen to impregnate the mare; others often involve a stallion being delivered for a specific (limited) time, or in synchronizing the mare's ovulation with a shipment of semen.
Thus, the question then becomes one of what is the optimal method for achieving the objective of timing control.
Several drugs are useful to hasten ovulation to a more fixed time to coordinate a schedule that works with breeding farms for both the stallion and the mare.1 While there are a number of effective compounds that can help horse owners and managers induce ovulation, few are as widely applicable as progesterone, an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis.
While progestins are routinely used to manage ovulation, studies have shown that by themselves, they will not necessarily control follicular development and it is possible to have ovulations occurring during treatment, or large pre-ovulatory follicles present at the end of treatment, either of which will result in unpredictable timing of estrus and ovulation.2
Altrenogest is a progestin of the 19-nortestosterone group commonly used to suppress or synchronize estrus in horses. It is used extensively in the reproductive management of mares to control the reproductive cycle, help maintain pregnancy, and help with behavior modification.
In combination, Progesterone 150 mg/ml / Altrenogest 18 mg/ml by NexGen is a superior solution for synchronizing estrus cycles for better breeding efficiency.
FOR RX ONLY: A valid prescription from a licensed veterinarian is required for dispensing this medication.