color question

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color question

This is a discussion on color question within the Horse Colors and Genetics forums, part of the Horse Breeds, Breeding, and Genetics category
  • sabino and rabicano

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    01-17-2011, 05:20 PM
Question color question

While looking through some stallions on I came across this guy! He is so interesting looking with all that white frosting in his hair. I don't particularly choose him to breed to or anything I was just wondering what causes that "frosting'' in his hair? And his babies too? Is that what is considered Sabino? Just wondering...I have been getting into equine genetics and want to know all that I can on it. If you know what it is please let me know. Or if it will be passed to his foals whats the percentage? 50/50? Is there a homozygous/heterozygous form of this "modifier"? Like I said just curious and wanting to know as much as I can on it. :) Thanks so much!

Beautiful Dun Stallion That Throws Color!

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    01-17-2011, 05:30 PM
Nope that isn't sabino. That is what they are describing it as... Frosting.

There is no test for frosting and it can come in different degrees, just like with any color. I would say though that he is probably heterozygous for it and that would give each breeding a 50/50 chance of the resulting foal having frosting from the sire. Just like with any modifier in the heterozygous form.
    01-17-2011, 09:58 PM
Dunno how they can call him a dun tho, bred from a palomino and a buckskin?? They are both creams. He looks like buckskin to me
    01-17-2011, 10:02 PM
He's a dunskin. He has the dun gene, and a cream dilute. So basically a buckskin dun. I looked him up on allbreedpedigree. His sire was a dunalino, which is where the dun factor came from.
    01-18-2011, 03:27 AM
What Poseidon said. Plus, you can clearly see his dorsal stripe and leg barring.
    01-18-2011, 09:06 AM
I think ND pretty much summed it up. Frosting doesn't come up in a horse's DNA (as far as I know at least) and I don't know about anyone else, but I've never seen it outside of Buckskin horses (or Dunskin like him.) He's very pretty though :)
    01-18-2011, 09:27 AM
Now ND here is one for you... could he be a minimal Rabicano with guard hairs on his mane??
    01-18-2011, 09:45 AM
Hmmmm. I don't think he is. But there really isn't a closer picture of his tail of sides that I can see.

I honestly think that frosting is associated with the cream gene and that palominos very well may have it and you just can't see it.
    01-18-2011, 10:11 AM
Then why don't we see it on smokey blacks? I am by no means an expert, but from what I have seen don't the 'frosty' manes tend to be guard hairs on duns?
    01-18-2011, 10:16 AM
The thing is, there are horses aren't duns that have it as well.

It might also be one of those things where is needs a certain combination of genes to be expressed.

On the smokey black thing... I have no clue. All I can do is speculate.

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