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Roaning in Thoroughbreds?

This is a discussion on Roaning in Thoroughbreds? within the Horse Colors and Genetics forums, part of the Horse Breeds, Breeding, and Genetics category

     
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        12-09-2010, 11:46 AM
      #21
    Weanling
    I've been reading this thread with interest. I'm not sure if this is helpful for you, but since you were asking about gray/roan, I just bought a TB mare registered as gray or roan. Here is a picture of her coat.
    Summertime, before I bought her:


    She looks more less bay and more gray to me now. Here's a picture from over the weekend, I don't have one without her coat on that shows the red hairs:


    I don't know what any of those genetic terms mean at all.. but I did find the link from the other page on rare colors of TB's very interesting!
         
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        12-09-2010, 11:54 AM
      #22
    Weanling
    Quote:
    Originally Posted by ptvintage    
    I've been reading this thread with interest. I'm not sure if this is helpful for you, but since you were asking about gray/roan, I just bought a TB mare registered as gray or roan. Here is a picture of her coat.
    Summertime, before I bought her:


    She looks more less bay and more gray to me now. Here's a picture from over the weekend, I don't have one without her coat on that shows the red hairs:


    I don't know what any of those genetic terms mean at all.. but I did find the link from the other page on rare colors of TB's very interesting!
    Very interesting! She is a pretty girl! Whats the time difference between those 2 pictures? If I read your post right, the first was this past summer?? She seems to have really grayed out or roaned out (whatever you want to call it) in a short period of time!
         
        12-09-2010, 12:33 PM
      #23
    Weanling
    The first picture was taken in August, the second one was taken this past weekend, on Dec 3rd. She's definitely changing colors! I'm excited to see if she'll get grayer or whiter (whatever the term for it is!).

    I looked up her bloodlines to see if she had Catch a Bird, and she did not. I looked more into it, looked up terms and I'm guessing she'd be called a rabicano. She seems to fit the discription of one. I'm not a color expert though, so I could be wrong on that.

    Edited: actually... reading again I think I am wrong on that... I need to look at her again to determine it I think.
         
        12-09-2010, 01:46 PM
      #24
    Trained
    Not seeing any rabicano on your mare ptvintage. She looks to just be a grey with a bay base coat.
         
        12-09-2010, 02:01 PM
      #25
    Weanling
    Well, I'm not a color expert. I perfer to keep things simple... chestnut, bay, black, etc. I didn't even know some of these terms (like rabicano) existed before I found the horse forum. Her papers say gray or roan, so that's what I call her.
         
        12-09-2010, 03:09 PM
      #26
    Weanling
    Quote:
    Originally Posted by VelvetsAB    
    I think it is possible that it is just her sock. I've seen a few horses, although not TB's have a sock that is partially roaned out and not a full sock.
    I have seen this, as well.

    Edit: check out this mare's "roan sock"


    ptvintage- your mare is definitely greying out.
         
        12-10-2010, 10:05 PM
      #27
    Green Broke
    Quote:
    Originally Posted by ptvintage    
    I've been reading this thread with interest. I'm not sure if this is helpful for you, but since you were asking about gray/roan, I just bought a TB mare registered as gray or roan. Here is a picture of her coat.
    Summertime, before I bought her:


    She looks more less bay and more gray to me now. Here's a picture from over the weekend, I don't have one without her coat on that shows the red hairs:


    I don't know what any of those genetic terms mean at all.. but I did find the link from the other page on rare colors of TB's very interesting!
    Oh, she is beautiful! Seems like a really fast transformation from being mostly bay to mostly gray.

    I have never seen a bay horse gray out, but I had heard of them. When I think of a horse graying out I always envision them starting out black.
         
        12-13-2010, 05:02 AM
      #28
    Started
    Ptvintage, definitely a grey. I knew it from the first pic bevore I scrolled down to the second due to her tail.
         
        12-13-2010, 08:38 AM
      #29
    Weanling
    Ok, I know this has been a LONG time coming, but I picked up Santana on Friday and she is officially mine!

    *Disclaimer: I know her feet were long in these pictures, she has since been shod and all four feet look amazing :)

    Here are pictures of her right hind where her roan-ish area is:



         
        12-14-2010, 08:18 AM
      #30
    Weanling
    Hmmm, I was perusing another thread and came across this information that I thought some of you may be interested in.

    According to UC Davis (who performs many tests for color and genes):

    Roan Zygosity Test

    Roan is a white patterning coat color trait of intermixed white and colored hairs in the body while the head, lower legs, mane and tail remain colored. Roan horses are born with the pattern, though it may not be obvious until the foal coat is shed. The white and colored hairs are evenly mixed in horses that inherit the classic Roan gene, which can differentiate this from several mimic patterns called roaning. Roaning patterns tend to be uneven in the distribution of white hairs and the inheritance of roaning has not been defined. The Roan gene is found in a variety of breeds such as Quarter Horse, Paints, Peruvian Paso, Paso Fino, Welsh Pony, Miniature and Belgian, but not in Thoroughbreds or Arabians.
         

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