KHP is listing their new "rare" white TB
 
 

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KHP is listing their new "rare" white TB

This is a discussion on KHP is listing their new "rare" white TB within the Horse Colors and Genetics forums, part of the Horse Breeds, Breeding, and Genetics category
  • Pure white horses rare
  • Listing khp

 
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    07-27-2011, 05:22 PM
  #1
Weanling
KHP is listing their new "rare" white TB

I thought there was no true white there was a grat that turned white I personally think he is a double dilute of some sort his coat carries that pearl gleam that my colt has in the sun plus the pink skin what do you all think.

Personally I hate the term rare..and can't understand why they listed him as such.http://www.youtube.com/watch?v​=U1vhQST2UlM
     
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    07-27-2011, 05:32 PM
  #2
Super Moderator
I can't see the video from here. I'll have to pull it up when I get home. There is such a thing as a true white, it's not common:

http://en.wikipedia.org/wiki/White_(horse)

White horses are born white and stay white throughout their life. White horses may have brown, blue, or hazel eyes. "True white" horses, especially those that carry one of the dominant white (W) genes, are rare. Most horses that are commonly referred to as "white" are actually "gray" horses whose hair coats are completely white.[1]
     
    07-27-2011, 05:34 PM
  #3
Banned
Video link does not work, but I found this: Video: Rare White Thoroughbred Arrives at KHP | discoverhorses.com

Yes, white (dominant white) is a real color. Sometimes it produces a pure white horse with dark eyes, and sometimes the horse looks more like a pinto/sabino. There are many different DW genes. All are lethal in the homozygous form, similar to OLWS.
     
    07-27-2011, 05:36 PM
  #4
Weanling
Ha learn something new everyday :)
     
    07-27-2011, 05:37 PM
  #5
Showing
There is no "white" gene persay so there are truly no "white" horses. What there are is pinto horses with maximum expressed white markings. Other than that, the closest you can get to "white" is cremello.
     
    07-27-2011, 05:38 PM
  #6
Super Moderator
Quote:
Originally Posted by bubba13    
Video link does not work, but I found this: Video: Rare White Thoroughbred Arrives at KHP | discoverhorses.com

Yes, white (dominant white) is a real color. Sometimes it produces a pure white horse with dark eyes, and sometimes the horse looks more like a pinto/sabino. There are many different DW genes. All are lethal in the homozygous form, similar to OLWS.
And if a horse tests positive for the homozygous gene that means that it will produce a lethal white?
     
    07-27-2011, 05:39 PM
  #7
Weanling
Quote:
Originally Posted by smrobs    
There is no "white" gene persay so there are truly no "white" horses. What there are is pinto horses with maximum expressed white markings. Other than that, the closest you can get to "white" is cremello.
I googled it and apparently there is is just very rare(I hate using that word)
     
    07-27-2011, 05:43 PM
  #8
Banned
Quote:
Originally Posted by farmpony84    
And if a horse tests positive for the homozygous gene that means that it will produce a lethal white?
If you breed a white horse to a non-white horse you have a 50% chance of a healthy white foal and a 50% chance of a healthy, non-white foal.

If you breed a white horse to another white horse, you run a 25% chance of a healthy, non-white foal, a 50% chance of a healthy, white foal, and a 25% chance of a lethal foal. Though in the case of dominant white, as opposed OLWS, I think the lethal form more frequently ends in abortion and late-term pregnancy termination rather than a live birth which soon dies.
     
    07-27-2011, 06:31 PM
  #9
Yearling
Dominant White is mapped onto the KIT gene, which is the same gene where Roan & Tobiano are found. I believe they've currently identified 11 different varieties of Dominant White. Many horses (especially Arabs & Thoroughbreds) who were believed to be maximum Sabino have since been identified as Dominant White.
     
    07-27-2011, 08:40 PM
  #10
Foal
Homozygous DW horses are terminated very early in the pregnancy. The mare can generally be rebred the same year.

I think the current count of DW mutations is up to 12. There was one discovered several months ago in a foal that carried a new spontaneous DW mutation. Unfortunately the foal didn't live long a few weeks I think. The researchers believed the new DW mutation he carried was the cause of his death. There may have been more discovered since then but if so I'm not aware of them.
     

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