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Re: [RC] [RC] SCID: Breeding Decisions - Jean Diaz

On Tue, 4 Jan 2005 11:47:53 -0800 (Pacific Standard Time), Cathy
<danugna@xxxxxxxxxx> wrote:

With ethical breeders, it would be possible to breed
the SCIDS gene into oblivion in a rather short time and still keep the good
traits of those bloodlines. 


I wish I could agree, but the mathematics of population genetics are
against us.  If every breeding Arabian in the world was in the hands
of  a perfectly ethical breeder, the odds are still that in
eliminating the SCID gene, we will be eliminating necessary genetic
diversity within a closed gene pool.  Thus my suggestion that the goal
is never to lose another foal to SCID, rather than eliminating the
gene itself.

Another pet peeve: "bloodlines" don't carry SCID.  Individual horses
either do or don't.

Regards,

Ambar
http://ambararabians.com/

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