Can Someone explain "Double Merle" to me?

Discussion in 'The Breeding Ground' started by StillandSilent, Jun 26, 2006.

  1. StillandSilent

    StillandSilent New Member

    Joined:
    Apr 17, 2006
    Messages:
    2,550
    Likes Received:
    0
    Trophy Points:
    0
    Occupation:
    2
    Ok. Our shelter just took in 2 purebred Aussie puppies. (At least is was claimed they are purebred.). Both of them are white with blue eyes and a little bit of black shading on the ears. Both of them are deaf. The person who surrendered them to animal control shrugged and said it was because the mother was a double merle and that led to some birth defects in the pups, including a blind puppy and these two.
    As I understand it, a double merle comes from breeding a merle dog to a merle dog. But why does this result is birth defects? Is it similar to many white animals with blue eyes having defects, or is it something else entirely. I have looked it up on the web, but the sites I found were extremely technical and I have zero breeding experience. I am very confused and I know there are many responsible breeders here who can explain in simple terms for a layman
     
  2. jess2416

    jess2416 Who woulda thought

    Joined:
    Jan 26, 2006
    Messages:
    22,560
    Likes Received:
    0
    Trophy Points:
    36
    Occupation:
    1
    Location:
    NC
  3. StillandSilent

    StillandSilent New Member

    Joined:
    Apr 17, 2006
    Messages:
    2,550
    Likes Received:
    0
    Trophy Points:
    0
    Occupation:
    2
    Thank You!
     
  4. jess2416

    jess2416 Who woulda thought

    Joined:
    Jan 26, 2006
    Messages:
    22,560
    Likes Received:
    0
    Trophy Points:
    36
    Occupation:
    1
    Location:
    NC
    Your Welcome, I hoped it helped :D
     
  5. Zoom

    Zoom Twin 2.0

    Joined:
    Jul 11, 2005
    Messages:
    40,739
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Denver, CO
    Jess beat me to it.

    Basically it's breeding a recessive to a recessive and that causes all sorts of problems for any animal. Northern breeds seem to be exempt from the "white+blue eyes=trouble" equation.
     
  6. Melissa_W

    Melissa_W New Member

    Joined:
    Jul 26, 2005
    Messages:
    4,290
    Likes Received:
    0
    Trophy Points:
    0
  7. stevinski

    stevinski Int CH - $uperBitch

    Joined:
    Jan 25, 2006
    Messages:
    2,062
    Likes Received:
    0
    Trophy Points:
    0
    Occupation:
    7
  8. Jynx

    Jynx New Member

    Joined:
    Oct 20, 2005
    Messages:
    1,071
    Likes Received:
    0
    Trophy Points:
    0
    Occupation:
    9 + fish
    Location:
    CT
    I have an aussie out of a merle x merle breeding. He is a black bi. Two in the litter were born deaf, 4 were ok. If y ou can locate aussie rescue in your area, they are normally really helpful in taking in and placing, not only healthy aussies, but deaf ones as well.
    Diane
     

Share This Page