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  1. #1
    Join Date
    Dec. 27, 1999
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    Midland, NC, USA
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    Default Knabstrupper color query....

    How heritable is Knabstrupper color? Is it just like Appaloosas where a leopard is heterozygous for the 'app' (varnish) gene which is required for spots in the first place, and a few spot app is homozygous (and both have the PATN1 gene), and blanket and snow caps are the same but with the PATN2 gene?

    Shoulda googled first.... Apparently they are. So is there any way to tell if a stallion is homozygous for the varnish gene (so you at least get color of some sort)? Are there any Knabstrupper stallions with documented color production figures?

    Jennifer



  2. #2
    Join Date
    Feb. 23, 1999
    Location
    Cypress, near Houston, Texas
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    8,537

    Default

    Like with Appaloosas, homozygous Knabstruppers are the "white born" or "few spot" stallions. In the U.S. there are only a few of these available and only one that is available fresh. Pegasus is in California. And Melyni Worth has frozen for the few spots, Ecuador and Halifax Middleson.
    Visit Sonesta Farms website at www.sonestafarms.com or our FaceBook page at www.facebook.com/sonestafarms. Also showing & breeding Cavalier King Charles Spaniels.



  3. #3
    Join Date
    Dec. 13, 1999
    Location
    Greensboro, NC
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    36,093

    Default

    Knab and Appy color genetics are identical - LP and PATN1/PATN2 genetics If you look at the Appaloosa Project at Current Research you'll see all the combinations.

    Varnish is separate from LP or PATN, and seems to be more expressed in homozygous form than hetero. There's no way to know though whether the horse is hetero or homo for it.

    PATN hides unless/until LP is present, so you can have a solid horse who carries PATN and not realize it until you breed.

    The only semi-guarantee of spots is to breed to a fewspot or snowcap, as they are homozygous for for LP. But you still need to get a PATN, and there's no test
    ______________________________
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  4. #4
    Join Date
    Feb. 10, 2006
    Location
    Middle of Nowhere, take a right, FL
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    4,443

    Default

    LP IS varnish. How much the horse roans out depends on other factors (suppressor genes, booster genes, etc). But it is one and the same. It is the switch that turns the pattern genes on. No LP, no color even if the horse carriers the pattern genes.
    Every mighty oak was once a nut that stood its ground.

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  5. #5
    Join Date
    Dec. 27, 1999
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    Midland, NC, USA
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    Default

    Right, so you can tell if a spotted horse is homozygous PATN1 or 2 (few spot or snowcap) but you can't tell if it is homozygous LP, can you? So you would have to see what the stallion throws and then hope :-)

    Jennifer



  6. #6
    Join Date
    Dec. 13, 1999
    Location
    Greensboro, NC
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    Default

    Huh, guess I'm a bit behind on varnish

    Did that come to light when they developed the LP test? I knew that had happened but hadn't thoroughly read up on it
    ______________________________
    The CoTH CYA - please consult w/your veterinarian under any and all circumstances. - ET



  7. #7
    Join Date
    Dec. 16, 2003
    Location
    Staunton, VA, USA
    Posts
    2,491

    Default

    Quote Originally Posted by ThirdCharm View Post
    Right, so you can tell if a spotted horse is homozygous PATN1 or 2 (few spot or snowcap) but you can't tell if it is homozygous LP, can you? So you would have to see what the stallion throws and then hope :-)

    Jennifer
    Er no other way around. You can tell if the LP gene is present, few spot or spots or varnish, but you can't tell if PATN1 or 2 are present UNLESS LP is also present.

    We have 4 stallions in the USA that are homozygous for LP and who have a record of color production.
    Halifax Middelsom --so far all offspring have been nr leopard or few spot
    Ecuador (frozen only)- mix of blankets and leopards
    Ravaldi (frozen only)- all have been leopard or nr leopard so far.
    Pegasus v Niehaus-Hof, mixture of color patterns in his off spring including some blankets and a few varnishes, and a few leopards.
    MW
    Melyni (PhD) PAS, Dipl. ACAN.
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    2 members found this post helpful.

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