Genetic defects from close breeding?

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One of the girls

In the Brooder
8 Years
Dec 25, 2011
Have done a little reading on threads covering inbreeding and line breeding.

Any thoughts on the possibility that some of these sudden deaths (many written about in other threads and one of my own birds), in apparently perfectly healthy birds, may be due to internal defects? My thought is that too much inbreeding and close breeding possibly creates birds with heart problems, valve problems, aneurysms of major arteries, etc, etc. Since these are hidden defects would breeders continue making the same crosses over and over?

Anyone aware of any studies or situations such as the above?

(This might belong in the genetics area but since sudden death is an emergency I put the idea here.)
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