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Odd bleached out spot. Nutritional Deficiency?

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  • Odd bleached out spot. Nutritional Deficiency?

    I've been taking care of a friends horse while she is out of town and have been wondering about a large bleached out pattern on the horse's hindquarters.

    http://www.flickr.com/photos/29598352@N03/4252223345/

    I've seen this before almost in the exact same place on another horse at this barn but just don't know what it is. Is it some kind of deficiency or is it just the way his coat is? Any insights?

  • #2
    Wow that's odd! I've never seen that before... interested to hear what it could be.

    Comment


    • #3
      It's similar to a somatic mutation, possibly something to do with chimerism.
      ______________________________
      The CoTH CYA - please consult w/your veterinarian under any and all circumstances. - ET

      Comment


      • #4
        YOu do get funny shaped bleached out spots

        Originally posted by Sillymoose View Post
        I've been taking care of a friends horse while she is out of town and have been wondering about a large bleached out pattern on the horse's hindquarters.

        http://www.flickr.com/photos/29598352@N03/4252223345/

        I've seen this before almost in the exact same place on another horse at this barn but just don't know what it is. Is it some kind of deficiency or is it just the way his coat is? Any insights?
        with a copper deficiency. Try the horse on a vit/min supplement with enough copper in it and see if the bleached out spots go away at the next coat change.
        MW
        Melyni (PhD) PAS, Dipl. ACAN.
        Sign up for the Equine nutrition enewsletter on www.foxdenequine.com
        New edition of book is out:
        Horse Nutrition Handbook.

        www.knabstruppers4usa.com

        Comment


        • #5
          Seriously doubt that has anything to do with nutrition
          ______________________________
          The CoTH CYA - please consult w/your veterinarian under any and all circumstances. - ET

          Comment


          • #6
            Why does everyone think coat color issues are the result of copper deficiency? I understand it can cause reddish hair, but sometimes hair bleaches.

            Comment


            • #7
              I've had 2 foals born with a "blond" spot. One is a bay Arabian mare and the other is a chestnut Half Arabian. No relation to each other. The bay had no white markings, but chestnut has 4 stockings and white down his face.

              The bay is 11 now and has not lost it, the chestnut is coming 2 so has shed a couple times... so it's there to stay also.


              I'm sure it's not a deficiency.

              Comment


              • #8
                It can be caused by a trapped nerve. The pain makes the horse sweat excessively in a very localised area. The sweat then bleaches the coat when the sun gets on it.

                Recommend a visit from a physio.

                Comment


                • #9
                  I would only think deficiency if it is a new spot or only showed up not too long ago. If the horse has had it for a long time I would think it is something genetic. My horse has a roan spot on his neck, he was born with it and it has dark skin under it so it is not a white marking. Some horses just have cool markings.
                  http://community.webshots.com/user/jenn52318

                  Comment


                  • #10
                    The spot near the hip looks like a wound, is that an open cut or a bald spot? It's hard to tell in the picture. If so, maybe the coloration and the sore are related.

                    Comment


                    • #11
                      JMHO!

                      Oh for cryin' out loud! He's got some Paint/pinto genes in there somewhere! The hair is a different color so those hairs are not from his bay genes!!

                      Comment


                      • #12
                        It has nothing to do with pinto genes either
                        ______________________________
                        The CoTH CYA - please consult w/your veterinarian under any and all circumstances. - ET

                        Comment


                        • #13
                          Looks like a big roan patch to me, but I can't tell if it's white mixed with bay or just all the same lighter color. Neat, though. I wouldn't sweat it if it were permanent.

                          Why does everyone think coat color issues are the result of copper deficiency?
                          Not everyone. Just this BB, I think.
                          Click here before you buy.

                          Comment


                          • #14
                            Depigmentation spots

                            due to copper deficiency are pretty well documented in cattle, less so in horses.
                            If it is a low Cu problem it's an easy fix. Low Cu is not without effects, if it continues will eventually lead to more profound problems.
                            If the spots are genetic then the Cu supplementation will not change them.
                            Supplementing with Cu is an easy and inexpensive way to find out and might save problems further down the road.
                            Yours
                            MW
                            Melyni (PhD) PAS, Dipl. ACAN.
                            Sign up for the Equine nutrition enewsletter on www.foxdenequine.com
                            New edition of book is out:
                            Horse Nutrition Handbook.

                            www.knabstruppers4usa.com

                            Comment

                            • Original Poster

                              #15
                              Thanks everyone. It's not a roan patch, it's just solid color. Although the little patch by his hip is a white spot that I assume he got from some kind of past wound. I'm just curious because I saw another horse with a very similar patch and I just could not figure it out.

                              JB, could you explain the somatic mutation a little bit more in layman's terms? I've been looking it up but most of what I'm finding is going over my head

                              Comment


                              • #16
                                The horse might be a chimera (I think that is what JB is getting at) where the animal is actually a "blend" of two fertilized eggs that fused together very, very early in the process of embryogenesis. So the resulting critter actually is a blend of two genetically slightly different cell populations. I think it can also be a spontaneous mutation in some of the chromosomes rather than a necessary fusion of zygotes/fertilized eggs. Lots of ways it can happen, and it's rare because if anything goes even slightly wrong in this process, the embryo is usually unable to survive. I'm pretty sure brindle horses are due to chimerism, but am not sure why they would have "stripes" where another type of chimera might have "spots".
                                Click here before you buy.

                                Comment


                                • #17
                                  It can be caused by a trapped nerve. The pain makes the horse sweat excessively in a very localised area. The sweat then bleaches the coat when the sun gets on it.

                                  Recommend a visit from a physio.
                                  Oh for criminies sakes. I have seen this coloration in newborns, sometimes on one lower leg , and on horses who never had a drop of abnormal sweat on the area. As well, I have had horses with isolated sweat spots due to nerve damage, ing and their coat never bleached out from it. It is GENETIC.
                                  Patty Stiller CNBBT,CNBF,CLS, CE
                                  Natural Balance Certified Lameness Specialist ,instructor.
                                  www.hoofcareonline.com

                                  Comment

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