alpacas: Re: [AlpacaTalk] BEW

And while I don't agree 100% with everything Andy Merriwether says
about color theory, here is a paper written by him and his wife, Ann
(both Ph.D.s)
http://alpacagenetics.com/AndyMBlueEyedWhites%20sent.pdf

I personally do not believe BEW is a thing that can be removed from
the genepool. In my understanding, it occurs with the combination of
a solid white, or an animal with a white spot, combined with the
merle, roan, or grey gene. It is not a defect of either parent,
because it is just part of the genetic makeup of the grey and the
white spot.

I also find it amusing that just about any color is acceptable on a
suri but a white spot is verboten on a huacaya.

Here's a nice web page regarding CA in camelids:
http://www.serenityacresllamas.com/choanal_atresia.htm
"Choanal atresia (CA) is one of many congenital birth defects that
can affect lamoids. Congenital simply means that it was present at
birth. A congenital anomaly can either be hereditary or can be
caused due to an influence (like a toxin) during gestation. Much of
the veterinary community looks upon choanal atresia as a genetic
defect although research has yet to shed much light on this
condition. OSU-CVM did research on CA but discovered that the mode
of heritance is not simple recessive trait, more likely it is
polygenetic with incomplete penetrance. Now, Dr Smith has retired
and I have not heard of another institution continuing the work."

Heather

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