Breeding two horses needs a lot of thought and planning. You don't just breed because you can — you must have an objective and plan for the descendants you produce. The glut of horses on the market this day and age should offer you a break when you consider breeding horses. But if your mind is made up, you've completed your homework and paired a nice match; it's time to get down to breeding.
Pasture breeding is by far the safest and best way of breeding horses. What this term means is that you transform the stallion into a mare that has been determined to be in the season. The paddock or pasture must be tightly fenced, and it is best if it does not border on other horses, or if there are other horses in it besides the two animals to be mated. If the mare has a foal on its side, the foal should be at least one to two weeks old so that it can remain out of the manner of its dam. Turn the mare out first, and then turn the stallion out.Nature will take its course, and although both animals may end up with a few bumps and bruises, in the end there is likely to be very little in the way of danger and a very good chance of conception. It is best to leave the mare and stallion together for her entire estrus cycle.
Responsible breeding method
Every mare that is bred and every stallion used for reproduction must be reproducing. Breeding badly formed mares to the un-gelded two-year-old next door is not a responsible way of producing foals. As Dr. Bob Wright, formerly of the Ontario Ministry of Agriculture, Food and Rural Affairs, retains the Veterinary Branch, a mare and a stallion must have the right to reproduce. This implies that any broodmare must have proved itself to be a pleasure or a performance horse, and must have desirable features, both physically and mentally, that can be passed on to generate a quality foal.