The stud farm is where you can find a suitable stallion to breed with your mare and hopefully produce even better offspring. Players will offer up their stallions to breed with for a price. You can filter results in the stud farm to only see your own horses, or sort by age, price range, prize money or groupings.
-Stud farm search screen-
If you are not sure whether a horse is of good breeding stock have a look at how many races it has run and how many wins/places/shows it has, that is usually a reliable indicator of good horse genes!
There is a 12 hour limit on the amount of time the horses can stay in the stud farm without being selected.
If your horse has been used at the stud farm, it will show in your recent activity in your Hooves of Fire Profile screen. Your stallion will be returned to your stable 30 minutes after the stud has been used. There will be an entry in the recent activity that says that your horse has been bred with <insert horse name here>. If you click on the horse's name it will tell you who the horse belonged to.
Using the Horse Profile page for your stallions, you can choose to either publically or privately stud your horse. If you choose the “Stud” button this will appear in the stud farm for all users. If you choose to privately stud your horse, it will only be visible to your Facebook friends when they visit the stud farm and select the “Private studs” filter. Only VIP's can use the private studding feature.