The Horse Forum > Horse Breeds, Breeding, and Genetics > Horse Breeding


This is a discussion on Stages within the Horse Breeding forums, part of the Horse Breeds, Breeding, and Genetics category

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    06-09-2008, 10:23 PM

We have just bred one of our mares, and I am VERY excited about it! I have looked all over the web for a site on the stages of pregnancy and haven't been able to find anything!

Does any one know any good sites to find the month by month stages of a horses pregnancy?

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    06-10-2008, 12:20 AM
This is what I found. I love Wikipedia.

Pregnancy lasts for approximately 335-340 days[26] and usually results in one foal. Twins are rare. Colts are carried on average about 4 days longer than fillies.[27].

Horses, particularly colts, may sometimes be physically capable of reproduction at approximately 18 months but in practice are rarely allowed to breed until a minimum age of 3 years, especially females.[26] Horses four years old are considered mature, though the skeleton usually finishes developing at the age of six, and the precise time of completion of development also depends on the horse's size (therefore a connection to breed exists), gender, and the quality of care provided by its owner. Also, if the horse is larger, its bones are larger; therefore, not only do the bones take longer to actually form bone tissue (bones are made of cartilage in earlier stages of bone formation), but the epiphyseal plates (plates that fuse a bone into one piece by connecting the bone shaft to the bone ends) are also larger and take longer to convert from cartilage to bone as well. These plates convert after the other parts of the bones do but are crucial to development.[28]


This link looks good too. You have register there to read it though.
    06-10-2008, 12:25 AM
Thanks so much! This is the 1st time i've been involved with breeding a mare and I'm very excited!
    06-10-2008, 12:31 AM
Your welcome I'm a total newbie here on the forum and am just researching and getting my fencing up this summer so I can buy a horse next spring. I never new horses has such a long gestation period. I hope everything goes well for your mare.
    06-10-2008, 05:46 PM
Good luck with your mare, I hope everything goes well!
    06-12-2008, 01:28 AM
Here is a nice Foal Development Timeline. Granted their legs aren't sticking straight out.

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