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Roan stud

Equine-Reproduction.com Bulletin Board » Equine Genetics » Roan stud « Previous Next »


Author Message
 

Hailey Waggoner
Neonate
Username: Waggoner

Post Number: 1
Registered: 09-2008
Posted on Thursday, September 25, 2008 - 02:46 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I have a red roan stallion. if he has black in his background what color mare would i need to breed him to to get a blue roan?
 

Jenni Luttrell
Senior Stallion or Mare
Username: Bugrace2000

Post Number: 1207
Registered: 02-2007
Posted on Thursday, September 25, 2008 - 05:46 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I dont have a clue but somewhere around here there is a color generator you could just put in various colors and see what gives you the highest percventage of blue roan
 

Diana Gilger
Breeding Stock
Username: Kdgilger

Post Number: 954
Registered: 01-2008
Posted on Thursday, September 25, 2008 - 06:36 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

i don't think the color calculator covers roan...or anything appy for that matter. This is (I believe) all going to depend on what kind/how much black is in his background. He may or may not carry any black himself, in which case, If it were me, I'd breed him to a homozygous for black mare....and see what you get.
 

Linda Bauer --Rebel due 4/3/09
Breeding Stock
Username: Llazyt

Post Number: 124
Registered: 04-2007
Posted on Thursday, September 25, 2008 - 06:52 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

This calculator covers roan
http://www.animalgenetics.us/CCalculator1.asp
 

Diana Gilger
Breeding Stock
Username: Kdgilger

Post Number: 956
Registered: 01-2008
Posted on Thursday, September 25, 2008 - 07:55 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Well, there you are....if you breed him to something that's homozygous for black and homozygous for roan...you'll get 50% blue roan and 50% red roan. I'd never seen roan on there before.
 

Hailey Waggoner
Neonate
Username: Waggoner

Post Number: 2
Registered: 09-2008
Posted on Thursday, September 25, 2008 - 08:49 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

His dam was a red roan and his sire was a sorrel paint. Is there any way he could carry any black pigment? His tail has black in it. Does that mean anything?
 

Hailey Waggoner
Neonate
Username: Waggoner

Post Number: 3
Registered: 09-2008
Posted on Thursday, September 25, 2008 - 08:53 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

What would his agouti gene be? sorry, don't know much about genetics...
 

Bobbi Govro
Breeding Stock
Username: Hh_farms

Post Number: 803
Registered: 03-2008
Posted on Friday, September 26, 2008 - 08:51 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

In paints, black is recessive. Just thought I'd pass that along. With his sire being sorrel paint, I would venture to guess that blue roan would be a challenge to get to. My sorrel paint and black mare will throw a chestnut 90% of the time with a small percentage of bay & sorrel but I can't get a black out of it, even though my paint stallion has a black/white parent. Genetics are a funny thing, throw the paint parent factor in there and it really sends genetics into a whirlwind. LOL!
 

Diana Gilger
Breeding Stock
Username: Kdgilger

Post Number: 960
Registered: 01-2008
Posted on Friday, September 26, 2008 - 09:07 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I would not think him to carry any black....agouti makes black tips, as in black mane and tail or legs. It's hard to get a black based foal from a sorrel or red of any type....and as bobbi said, throw in pinto, that makes it harder.....but with appy's everything's a crap shoot....and you never know what you'll get until you try. Your best bet though, is to breed to a mare as mentioned above....and that only gives you a 50/50 chance.....of blue vs red .
 

Emily West, Zita born 4/12
Breeding Stock
Username: Paintlover

Post Number: 800
Registered: 06-2006
Posted on Friday, September 26, 2008 - 05:40 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I will give you an idea of what you may get depending on many variables. For clarification I will be refering to blue roan as black roan,( as genetically that is what it is).

First off we will assume that your stud is aa/non Agouti,( meaning no bays).

Now depending on the mare and whether or not she is black, black roan, or homozygous for black the results will look like this:

Heterozygous Black mare to Red Roan Stallion
25% sorrel
25% red roan
25% black
25% black roan

Homozygous Black Mare
50% black
50% black roan

Hetrozygous black roan mare
12.5% sorrel
37.5% red roan
12.5% black
37.5% black roan

Homozygous Black roan mare
75% black roan
25% black

Now if your stallion does carry Agouti take the above chances of black or blue roan and divide them. For example this:

Heterozygous Black mare to Red Roan Stallion
25% sorrel
25% red roan
25% black
25% black roan

Would now look like this:

Heterozygous Black mare to Red Roan Stallion
25% sorrel
25% red roan
12.5% black
12.5% back roan
12.5% bay roan
12.5% bay

If he is AA or homozygous for agouti then there would be no chance for a black or black roan. So the above options would look like this:

Homozygous Black Mare
50% bay
50% bay roan

Instead of:
Homozygous Black Mare
50% black
50% black roan

If the mare you decide to breed to is a Paint,( we will use Frame overo for the example), then there wold be a 50% chance of a Frame overo foal. So to see your options you would divide the above color options in half so this:

25% sorrel
25% red roan
25% black
25% black roan

would now be this:
12.5% sorrel
12.5% sorrel frame overo
12.5% red roan
12.5% red roan overo
12.5% black
12.5% black overo
12.5% black roan
12.5% black roan overo

I would get your stallion tested for agouti and because he came from one Paint parent I would also get him tested for OLWS.

Good Luck with getting the foal of your dreams!!!!

It also should be noted that a sorrel horse can have black hairs on their body. It could come from the sooty gene. :-)
 

Diana Gilger
Breeding Stock
Username: Kdgilger

Post Number: 964
Registered: 01-2008
Posted on Friday, September 26, 2008 - 06:24 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Emily, I knew you were lurking around here somewhere and would set this matter strait! LOL
(resident color calculator guru...)
 

Emily West, Zita born 4/12
Breeding Stock
Username: Paintlover

Post Number: 801
Registered: 06-2006
Posted on Friday, September 26, 2008 - 08:01 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Diana, really you are to funny!!! I just happen to love this stuff. :-)



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