Perhaps the best time to breed a mare for the first time is when she is three to foal at four, or four to foal at five. However, there are a variety of reasons that might alter that perfect age. Mares that are just beginning out in the show ring may be under training at the time and should not be asked to carry a foal, grow it, and train it. They need to rest and recover before being subjected to such a task.
Mares that are already producing winners can be bred at any age as long as they have not gone into heat since their last foal. A mare that has recently had a filly will not get pregnant again until her next cycle begins. So even if she was bred as early as four years old, she would not be able to get pregnant until she was six years old the next time around.
In general, you should wait until a mare is at least two years old before breeding her for the first time. Some breeders prefer older mares because they have more experience and know how to take care of themselves. Also, younger mares tend to produce more milk than older ones do and so require less frequent feedings during pregnancy.
The best time to breed a mare is when she will stand for 15 minutes without pain or discomfort. If she does not stand up within a few days after breeding, this means that she was injured while standing for the stallion and needs to rest until she is healthy again. Do not breed her again until she has recovered.
Mares are often passed their reproductive prime when they reach the age of 15 to 16 years. There are mares that can carry and deliver healthy foals into their twenties, but the bulk of them have already had numerous successful pregnancies. They just become less fertile as they get older.
The main factor determining a mare's ability to breed is her reproductive system. If she isn't able to conceive for any reason, even after receiving treatment from a veterinarian, she will never be able to produce offspring. Her organs must function properly for this to happen. A mare may not be able to breed at all if one of her ovaries is removed or if she has some type of genital injury.
A mare may be able to breed every other year up until she is twelve years old. After that, she should only be bred once every three years. The frequency of breeding should be based on how often her reproductive organs function properly. For example, a mare who has regular periods and is not using fertility drugs should be bred every other year starting when she is eight years old. Once she reaches ten years old, it is safe to say that she won't be able to give birth for another five years at least. She should not be bred again before the end of that time frame unless there is a problem such as pregnancy or transmissible disease in her area.
It does go down, but not significantly. It drops significantly at 15-16, although this is dependent on the mare. I believe the "optimal" age for a mare to produce her first foal is between the ages of 4 and 12. After this age, she will be less likely to have a healthy baby and more likely to suffer from postpartum problems.
The best age to put a mare in foal is when she is healthy, between the ages of 4 and 12.
Mares are born with a natural desire to give birth. This desire increases as they get older. However, unlike humans who continue to develop throughout their lives, mares's bodies stop developing once they reach puberty. Therefore, they will never again be pregnant until they are placed in breeding grounds where they can meet with stallions and have babies.
Breeding grounds are areas where horses live in large groups with many other breeds of horse. They usually consist of open grasslands with few trees or hills. There, young mares can meet with stallions and have babies. These areas can be real farms or just open fields, but they need to be well managed horses communities because female horses need to be able to travel between farms without being killed by predators.
A mare (female horse) can only have one foal each year. A mare is capable of bearing a foal at around 18 months of age, but it is better for the mother and foal if the mare is at least four years old, as the mare has achieved full growth by this time. A mature female horse can also bear young every other year by having periodic ovulations. The eggs will develop into embryos which will then drop or be aborted.
Mares usually give birth between April and June, when temperatures are most conducive to infant survival. A mare needs about nine months between pregnancies. During this time she will not produce any milk and so must be given a bolus of corn or some other grain product to provide nutrients for herself and her baby. If she is not given the bolus then she will likely eat her way through it instead, which would be very harmful to the fetus.
It is possible for a mare to become pregnant more than once in a single year. This happens when she has multiple ovulations during the same season. Most often it is due to an imbalance in the hormones produced by her ovaries, but it can also be caused by radiation therapy or certain types of surgery on the ovaries. If a mare becomes pregnant more than once in a year then she is said to be polytocous.