Post
by AHGSP » Thu Jul 03, 2008 10:50 pm
Aylaschamp,
If I recall right from the other thread, your your pup appears Cinnamon?
Okay, this is an interesting one. I went back and looked at the info
in Georgina's book and she was quoting Burns (1952) who was using info
from the Danish Stud book about a litter of 11 GSP pups from two
normal colored "brown" parents that produced nine brown pups and 2
that were "cinnamon colored". Burns attributed this to a modifying
gene Z named by Steiger (1936). Willis(1977) mentions but doesn't
name five alleles for color paling in the German Shepherd(okay here we
go again with another breed) thus leading Georgina to the possibility
there may be another gene other than the "C" locus gene that is
responsible for the depth of color in the liver dogs. She then
continues to say that it is worthwhile to point out that a problem
exist(most prefer the darker dogs) and the C" locus gene alleles
provide a possible explanation. Keep in mind she states "possible
explanation".
All of this said I happen to have Dr. Ojvind Winge, a Danish
geneticist book that shows how inheritable factors are passed through
the generations and how they may apparently disappear, only to show up
later....
Anyway from his book, Chapter XXI - Short-haired Bird Dog(the GSP as
we know it) which has great plates that show the various color
combinations and the gene locus. As it pertains to Cinnamon he
attributes it to the Z gene. Following is direct quote from his
book. "Z. Cinnamon colored, "Zimtfarben," intensity factor. Brown
and red dogs that lack Z and therefore have zz receive a light color
than Z-dogs. The eyes are also lighter.'
Also direct quote from his book is the litter referenced by Georgina
which I mentioned above. "Finally, in brown dogs, both a darker brown
and a lighter brown, presumably a recessive shade, are found. The
gene Z, so named by Steiger(1936), is found in nearly all Shorthairs.
If it is lacking and zz occurs, the brown coat is modified to a
cinnamon color. Thus, in the offspring of 90368 Freja of
Helhoejgaard(brown) and 64829 Flok (brown-speckled with brown
markings) nine brown and two cinnamon-colored puppies occurred."
Quite possibly and perhaps apparently, in your pup as well.
Bruce Shaffer
"If you do what you've always done, you'll get what you've always gotten"
Mark Twain
Bruce, Raine, Storm and GSP's
Almost Heaven GSP's
"In Search of the Perfect GSP";)