If there are stallions around and you don't want to have her bred then yes keep her in, But if not stallions are near then don't worry and let the cycle pass.
The first heat that occurs a few days after birth is called a Foal Heat. Breeding a mare on a foal heat is possible, but sometimes not the best thing for the mare. As a result many breeders do not breed on foal heat. Just because you can do something, doesn't mean you should.
They can, but usually not. Horses will mostly only mate once the mare is in heat.
A mare may become more tempermental when she is in heat, and possibly more agressive. Another characteristic that a mare is in heat is what is called flagging or winking. A mare may lift her tail in front of a male horse to get his attention. The most sure sign that a mare is in heat is her acceptance of being near a stallion. If a mare is in heat around a stallion she may squat and urinate showing she is ready to breed.
If she goes up to a male and signals him to mate with him which is usually spring time
The only reasonable way to "stop" a mare from going into heat, is to keep her with another mare, not a gelding or stallion. having a male around even if they are cut, will encourage the mares cycles to begin. But keeping her away from males may not stop it all together, but it will at least make them less severe.
When you cover your mare on Howrse, the owner of the mare gets to keep the foal.
No.
A mare goes into heat, or estrus, as part of her reproductive cycle to attract a mate and potentially conceive a foal. During this time, her hormones fluctuate, causing changes in behavior and physical signs like increased vocalization, swelling of the vulva, and increased interest in mating.
The best insulation to keep heat out of a building is reflective insulation, such as radiant barriers or reflective foil insulation. These materials reflect heat away from the building, helping to keep it cool.
In heat or in estrus.
To prevent your mare from going into heat, you can discuss with your veterinarian the option of using hormone therapies such as altrenogest (Regumate) or a hormone implant. These methods can help suppress estrus behavior. It is important to consult your vet to determine the most suitable course of action for your mare.
it means the mare is in a bad mood, typically brought on by hormones during the heat cycle.