You mean foals. Colts is a term for male horses under 5 years old. As for your question, well, it depends how much you breed it. If it is a mare, much less than a stallion. If it is a gelding- none.
Brood mare
From 1953 through 1983 -- 30 years.
Only one. And even then, the chance of a mare giving birth to a colt is a mere 50% or 1:1 chance.
14 years!! 1998 to 2011
The Colts lost their 2010 and 2011 season openers to the Houston Texans.
College at Syracuse and NFL with the Indianapolis Colts.
A mare is an adult (over 4 years old) female horse.A mare is a female horse that is 3 years or older, if the horse is any younger, it is considered a filly;)Some people don't consider a female a mare until they are 4 years old, and some don't call them a mare until they are 5!
Both colts and fillies are carried by the mare for about 11 months, or around 340 days. The gestation period is generally the same for both genders.
Nine - 1954 through 1962.
give her hormones shots, she might be getting side tracked by the colts which cause her to give up
No, they are not.