Chestnut to Grey?

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Chestnut to Grey?

This is a discussion on Chestnut to Grey? within the Horse Colors and Genetics forums, part of the Horse Breeds, Breeding, and Genetics category
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    03-04-2011, 12:28 AM
Chestnut to Grey?

Hi everyone! I am new around here but am very excited to have found this site!
I have a filly who will be 2 in may. She is a TB/Andy cross (mom is bay, dad is black) and she is RED!! When she shed her baby fur (which was a creamy read) and grew in her fiery color, she also acquired a white spot on her rump. It seems each time she sheds (summer to winter, winter back to spring..) a few more white hairs show up randomly on her body...right now, the white rump spot grew another spot next to it and she has some roaning in her flanks.

Do you think she will eventually grey out or just have this pattern? If it helps, last week was the first time I noticed white hair in her mane as well. Thanks!
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    03-04-2011, 12:30 AM
Being as she has no grey parents, she is not grey. I would say she has something else going on.
    03-04-2011, 01:13 AM
Even with the Andalusian gene? It will be interesting how she ends up! Thanks for the response!
    03-04-2011, 01:37 AM
Doesn't matter what the breed is. If the sire or dam are not carrying the grey gene it isn't possible for the offspring to be grey.

Do you have pictures of this spot you can share?
    03-04-2011, 09:42 AM
Some chestnuts have white flecks thrown in, but aren't very visible unless you get up close.

Are they small spots? They could be Birdcatcher spots.
    03-04-2011, 12:19 PM
Yep, since gray is a dominant gene, if neither parent is gray, then they don't carry it. Hence gray is impossible for your filly.

I would also bet it's some form of roaning, from what I understand, rabicano is not exactly rare in TBs so it could be rabicano roaning. Then there is always the possibility of birdcatcher spots.

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