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Originally Posted by GreenwoodBiewer  I do have to disagree with you on one point however, not ALL breeders of colored yorkies are out there breeding these dogs for a “fast” buck. We show are dogs where we can, we do health screening, we do not sell to breeders,(unless we know them personally) we know our lines, we only breed top quality dogs, we don’t breed the females until they are two years old and stop breeding prior to 6, we check references on all of our placements, we don’t PUMP out puppies, we strive for the best, we don’t keep our dogs in cages, we feed top quality raw food, the dogs live in the house etc etc etc..
This is a passion, not a business to most of us. We have goals we are striving to achieve, and to lump us all together and say that we are all in this to capitalize on “an unhealthy demand” is unfair. |
Dianna, it wasn't my intention to insult you or other dedicated breeders of parti/biewers and lump you all together.
But, I would like you to understand that yorkie texture and coloring is unique in the dog world. And all I want is to protect this wonderful trait that unfortunately is beginning to fade.
Wrong texture (woolly, cottony, mix) and dyed hair are at this time the biggest problem for this particular trait. You see, color and texture are related with each other. You can't have the one without the other. The genes that determine colors also determine texture.
We very often see dogs that become silver at a very early age and very pale tans. In addition black woolly dogs seem to be preferred by judges that can't distinguish the true silky texture and the cottony/woolly texture.
Color and strong pigmentation in the correct silky texture is so hard to find and so hard to achieve.
And if you do, you don't have other desirable traits.
Since we already have so many problems we don't need to add the sp or the si allele too.
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Originally Posted by GreenwoodBiewer Allowing the colors to flourish will not harm the beauty of the traditional. Even if a traditional “carried” the piebald gene (which some do) it is not expressed unless bred to another that also carries. If you know your lines, and you know your breeders, by reading pedigrees, you will know what is in your dog. Color Testing is also available for those who are unsure.
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The white spotting alleles
are thought to be examples of incomplete dominance. If this is correct, means that a heterozygous dog [Ssp] will express its most dominant gene, but
may also be affected by the more recessive one to a lesser extent. In other words a carrier of the ressesive [sp] will PROBABLY have white color in some parts of its body.
The question that arises is how much white does a heterozygous dog [Ssp] show in its phenotype, if any.
Does a small spot on the chin or the chest mean a dog is a carrier [Ssp]?
Can a Blue and Tan dog WITHOUT any white spot, be a carrier of the sp gene?
These questions can only be answered through genetics and dna tests on S Locus in blue and tan specimens of the breed.
Finally, its strange that we know the genes involved for OFF colored Yorkies but we don't have enough data for the genes involved for the blue and tan.