Re: [AlpacaTalk] Re: Newby question
Hi Maegan,
I have never before heard of an association between BEW and choanal atresia. All of the theories that I have heard are related to having a white spot creating a lack of melanin in the region of the ear and eye. The lack of melanin which is a crucial element in the cells for hearing, causes deafness. Can you or your mom please provide the documentation that supports that? Inquiring minds and all that. The white spotting gene is certainly genetic, but, from my very limited knowledge of color genetics, white spotting is very common and would be very difficlut to eliminate from the gene pool.
The Alpaca Research Foundation at the AOBA conference reported that research sponsored by the ARF showed that choanal atresia is not an isolated defect, in that necropsies have revealed that choanal atresia is one of a cluster of defects known as CHARGE syndrome. .
By the way, Dr. Andy Merriwhether (I'm sorry if I spelled that wrong Andy) is not a vet, but a research geneticist who is trying to map the genome of alpacas and is also creating a bank of DNA samples from animals that have defects.
Thanks,
Laurel
The Shouvlins
Bluebird Hills Farm
Springfield, Ohio
937-206-3936
www.bluebirdhills.
bluebirdhills@
> Hi Nan;
>
> Yes, blue eyes are a flaw and a congenital defect that should not be
> allowed into a breeding program but some people do this anyway.
> The reason why blue eyes (or white eyes as it is correctly called) is due
> the the lack of the pigment Melanin reaching far enough up to the
> eyes(causing the blue or white eyes), the inner ear of the animal causing
> deafness and can even cause Choanal Atresia (a bone growth in the nasal
> cavity of the cria, preventing it from breathing upon being born and it
> dying not long after because it can't breath), wrye face, etc. Another
> thing about blue eyes is if it is in the genetics, it can never be gotten
> rid of and actually may breed through as a dominant trait. My mom wrote a
> very informative and thorough article on this subject after doing much
> research and talking to many vets.
>
> There was a very highly regarded and extremely well known judge who was
> judging whites one year at a large show. He proceeded to dismiss every
> blue eyed white out of the ring before judging the class. This did not
> make some people happy, but posed as a wake up call for some who had
> thought of doing this or having this in their program. Does it stop people
> from breeding them? No. But some have made different decisions when it
> comes to the background of the animals they have or choose to purchase.
>
> Hope this helps you...
>
> Maegan Blessing
> Cedar Grove Alpacas, LLC.
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posted by Chaddo at 6:35 AM
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