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This is a discussion on Grulla within the Horse Colors and Genetics forums, part of the Horse Breeds, Breeding, and Genetics category
  • Can a black throw a grulla foal
  • Must have colors for a grulla horse

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  • 3 Post By CLaPorte432
  • 2 Post By lilruffian

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    01-20-2013, 01:17 PM

My favorite color is the Grulla. If I have a buckskin mare, what is the probability she would throw a grulla? Would it be best to breed to another buckskin, or a grulla. I have no clue but I deffinatly want to breed her to the best possibility.
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    01-20-2013, 02:25 PM
You need a horse with the dun gene. Buckskin is cream. They are completely different genes.

And you shouldnt breed specifically for color. Its much easier to just buy a grulla.
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    01-20-2013, 03:23 PM
Okay thanks.
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    01-20-2013, 05:51 PM
Green Broke
I would say your chances would be slim, even if you bred to a grulla.
Being a buckskin, your mare is for sure carrying one black gene (possibly 2) agouti and cream.
To be a grulla they must have atleast one black gene and dun. No agouti.
If you bred to a grulla there would still be a good chance that you would not get a grulla but probably a bay dun or a dunskin.
Your best bet would, as CLaPorte423 said, would be to buy one.
MelissaAnn and Nokotaheaven like this.
    01-21-2013, 11:16 AM
The best possibility would be homozygous black and homozygous dun. That will give you the following possibilites:

Smoky grullo (looks no different than a regular grullo, but the horse carries the cream gene)
Bay dun
    01-21-2013, 02:06 PM
Green Broke
If the mare is homozygous for agouti (carries two copies of it) there is 0% chance of her producing a grullo foal, no matter what color the stud is. As a buckskin, she's guaranteed to carry at least one copy of it.

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