Linebreeding/Inbreeding? - Page 3

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This is a discussion on Linebreeding/Inbreeding? within the Horse Breeding forums, part of the Horse Breeds, Breeding, and Genetics category

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        05-19-2013, 05:07 PM
    I would have the mare checked for Lateral Patella Luxation, it is a ressesive genetic disorder that is common in Miniature horses and shetlands both in the US and the UK.
    Inbreeding is not something I would do myself ever and now I am dealing with problems caused my inbreeding in a way, my stallion has Lateral Patella Luxation and compared to a lot of horse and ponies he isn't that in bred, however it has caused a genetic fault that has been hidden in his lines to come to light. He is bred from the best lines in the breed and some lines are very common making them impossible to avoid. This is the reason I wouldn't inbreed as there is this genetic problem hidden in my breed and there is no genetic test for carries so we have no idea what lines it is in so to avoid it you avoid inbreeding.

    I bet none of that made senses anyway.

    Here is my stallion pedigree
    Enrique of St Ninian Shetland Pony
    Our foal by him also has it and the parents weren't that closely related.]
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        05-20-2013, 01:44 PM
    Too bad you're in this situation! As others have said, the foal will probably be fine. The only issue I have heard of with line breeding/inbreeding is that any recessive defects the mom carried and passed on to her colt will again be brought forward to the genetic mix and could possibly be passed on. That being said, you take that risk if you breed to anything non-related who are genetic carriers. And when I say genetic defects, I don't mean 3 eyes or anything of that sort, but other things as mentioned above like lethal white, or even things that can remain hidden for years like heart issues. I've included a link to a mare I used to have as a kid. Lots of linebreeding in her history and the practice is pretty common. I wish you the best of luck though and hopefully everything goes well for both mare and foal!

    El Amira Arabian
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