How long do horses stay in heat?

Answer 1

Most mares will come into heat every 21 days. Usually 21 days after the day the mare first comes into heat, she will start into heat again, but some mares vary anywhere from 18 to 31 days in their heat cycles. Heat periods are generally longer earlier in the breeding season and many older mares have longer than average heat cycles.

The period of time when the mare is fertile and can conceive a foal generally only occurs 24 to 48 hours before the mare goes out of heat.

Answer 2

Depending on the individual mare and the weather conditions the average heat cycle last about 7 to 10 days. If the mare is not bred she will go out of heat for 2 to 4 weeks. But in the warm months some mares go into heat and may remain in heat at a reduced level for months at a time.

Answer 3

Horses are in heat, or estrus, for an average of 5-7 days. However, this can vary among individual horses. Estrus cycles occur every 21 days throughout the breeding season, which typically lasts from spring to early autumn.

Answer 4

a couple days out of about every six months to a year

Answer 5

A filly will go into heat anywhere from a year to 3 years old.

Answer 6

A mare that has just gone out of heat usually cycles back in 14-16 days.

Answer 7

1 to 2 weeks

Answer 8

Every 21 days, lasts about 7 days.