BareMews
Bald and Beautiful Sphynx Cats
The outcross program was developed as a way to provide genetic diversity to the sphynx breed since they
originated from a single genetic mutation. This allows a way to increase the gene pool and provide
different lines to work with for the
overall betterment of the breed. While an outcross program does take
time and many generations to develop "typey" hairless kittens suitable for the show ring, I think the
advantages to this program are many. I personality feel it is worth the time, costs, and space required to
help insure the future of this breed. The potential advantages are many, including genes that could help to
improve the immune system, increase overall vigor and eventually help breed out HCM from the breed. The
breeds allowed to be used in the
Sphynx outcross program differ per cat association, but the most
common are the Domestic Short Hair, the American Short Hair and the Devon Rex (although few use
Devons for a Sphynx outcross anymore because the Devons have their own set of health issues - such as
luxating patella, spasticity and Vitamin K bleeding disorder). The gene for the hairlessness is recessive. The
first generation of the Sphynx outcrosses are all normal haired, but carrying for the bald gene. Even though
the first few generations have hair, they have many of the classic Sphynx traits that endear so many to this
breed. If you are considering adopting a Sphynx - please consider getting a less expensive companion
Sphynx with hair! Two are better than one and they will keep each
other company when we have to be
away.

This is the general progression of what happens with a Sphynx outcross program

Breeding Pair in Yellow -  Generation Details in White



















Note:  You might wonder what the "F" in "F1", etc stands for.... it means filial.  Filial means the successive
generations of progeny in a controlled series of crosses, Starting with two specific parents (the P
generation) and selfing or intercrossing the progeny of each new (F1; F2; . . . ) generation.
Outcross Program
Copyright 2007-2017. BareMews Sphynx. All rights reserved.
F1   All kittens will be fully coated because the hairless gene in the
Sphynx is recessive. All will carry for the hairless Sphynx
gene.                  

F2   Statistically, 50% of the kittens in this litter will be fully coated
and
50% will be hairless. Typically, a breeder will choose to keep a
hairless one for their breeding program, but there may be reasons
to
keep a fully coated one too.

F3   All kittens should be hairless. Most of these kittens should
start to look like a typical
Sphynx.                                               
                                                                 
F4   These (bald) kittens are considered pure-bred Sphynx by all
Cat Associations and can be shown as such.         
DSH x  Sphynx  =



F1  x  Sphynx  =
Hairless      
F3  x  Sphynx  =
Hairless
F2  x  Sphynx  =
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Any fully coated outcross Sphynx, regardless of the generation, will carry for the
hairless gene and will continue the 50/50 ratio when bred to a hairless Sphynx.