breeding for color😍 - The Horse Forum
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post #1 of 43 Old 07-13-2019, 10:16 AM Thread Starter
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breeding for color😍

If I breed a Homozygous Black Overo arabian stallion to my colorfull Bay -she has white hind legs, black frontleggs, black knees, yellow shadings and a key like star- Spanish Mustang...what color and type of horse would I get? My mustang is super sweet, calm and ultra brave. They say that this stallion too is very sweet and calm.
Thanks
Shira♡
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post #2 of 43 Old 07-13-2019, 10:46 AM
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So sire would be EEaa if homozygous black. Mare is at least E_ and A. You will certainly get E which rules out red entirely and may or may not get A for bay. You NEED to test for frame in your mare or you could get a foal with LWO (homozygous frame) that will mean baby will need to he euthanized after birth or will die soon after in a cruel manner.
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post #3 of 43 Old 07-13-2019, 12:01 PM
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I would get the mare tested as @QtrBel said. I do think it's unlikely that the horse carries frame based on the description, but it's super important when breeding overo.

It sounds like you would get either a black or bay foal. The amount of white would be influenced by the overo gene.

What type is the arabian? Are there any pictures of him? Some are so slender and others are big barrels, so it's hard to predict what type of horse you might get.
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post #4 of 43 Old 07-13-2019, 12:17 PM
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Ditto the LWO test. A good breeder wouldn't approve the mare without one.

If you want colour, you're better off buying it.
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post #5 of 43 Old 07-13-2019, 09:36 PM
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@Filou even a solid horse or horse with little white can carry frame. If you do not know the parentage or are not 100% sure they are a breed that does not carry frame then testing for frame can save you the misery of losing a foal.
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post #6 of 43 Old 07-13-2019, 09:40 PM
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Spanish Mustangs carry frame. The stallion she is looking at is overo.
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post #7 of 43 Old 07-13-2019, 10:02 PM Thread Starter
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Quote:
Originally Posted by Shira (themustanggirl) View Post
If I breed a Homozygous Black Overo arabian stallion to my colorfull Bay -she has white hind legs, black frontleggs, black knees, yellow shadings and a key like star- Spanish Mustang...what color and type of horse would I get? My mustang is super sweet, calm and ultra brave. They say that this stallion too is very sweet and calm.
Thanks
Shira♡
This is the stallion:
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post #8 of 43 Old 07-13-2019, 10:21 PM Thread Starter
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Originally Posted by QtrBel View Post
So sire would be EEaa if homozygous black. Mare is at least E_ and A. You will certainly get E which rules out red entirely and may or may not get A for bay. You NEED to test for frame in your mare or you could get a foal with LWO (homozygous frame) that will mean baby will need to he euthanized after birth or will die soon after in a cruel manner.
Okay i'm getting a little confused here... sooo if my mustang carried frame would that be bad or good? (i'm only 14y and just trying to figure out some stuff).
If frame is dangerous what kind of horse would be safe for her to breed with?
here's a picture of her:
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post #9 of 43 Old 07-13-2019, 11:20 PM
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Quote:
Originally Posted by Shira (themustanggirl) View Post
Okay i'm getting a little confused here... sooo if my mustang carried frame would that be bad or good? (i'm only 14y and just trying to figure out some stuff).
If frame is dangerous what kind of horse would be safe for her to breed with?
here's a picture of her:

The Frame Overo colouring is lethal when homozygous, when they carry two copies. It causes foals to be born with incomplete digestive tracts and they die a terrible death within days if not euthanized. 100% of the time.


The stallion has one copy, Oo. If your mare also had Oo, then there will be a 25% chance of a OO foal. Too high odds for the risk.



Punnet square:

__|O_|_o
O|OO|Oo
o |Oo |oo


Sometimes it's obvious if a horse has frame. Frame can hide, though. You can have solid horses with no white at all who are Oo. Often in solid horses, they will have low leg white and big blazes, but other colour genes can influence that presentation. That's why we've said if there is even a chance that the mare carries Frame through her breeding, she needs to be DNA tested.
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post #10 of 43 Old 07-14-2019, 12:51 AM
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So, it sounds like if you are considering breeding your mare that you had best get a genetic panel test done, so you know her genetic makeup. That would test for the Lethal White gene, right?
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