Re: [pyrnet] Pyr hearts

["Janice Swenson" <janices@austin.rr.com>]

On 21 Dec 2000, at 8:05, JGentzel@aol.com wrote:
> SAS sounds extremely bad as well and its inheritance mode of a
> problem.  What is the feeling of knowledge presently out there on SAS
> puppy, if both parents must be carriers?  Or can only one transmit the
> disease forward.  We really do not understand the nature of the
> transmission and I have read it displays both dominance and recessive
> qualities.   

And probably modifiers......  Breeding dogs need to be cleared with 
dopplers and ONLY cleared dogs are used for breeding.  Once 
you've produced a SAS puppy don't repeat the breeding.  A murmur 
is not always heard or it's so faint only someone very good catches 
it and a doppler catches an abnormality in left ventricular outflow 
tract, and in these cases trivial SAS can't be ruled out.  It's almost 
impossible to stop SAS.  Just talk to the newf breeders or golden 
breeders or rottweiller breeders.  Heart checks and dopplers are a 
must to keep it to a minimun.  There's enough cases known where 
newfs have cleared heart checks and dopplers and upon a post 
mortem shown to have SAS.  The only true hope is a DNA marker 
being found.  


Janice, janices@austin.rr.com
Lana & Linsey (newfs), Sonny (pyr)  
http://home.austin.rr.com/janices
Hutto, TX