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-   -   choc. yorkie (https://www.yorkietalk.com/forums/general-yorkshire-terrier-discussion/152976-choc-yorkie.html)

cgennawey 11-21-2008 03:30 PM
oops
 
Quote:
Originally Posted by cgennawey (Post 2342356)
I have a chocolate yorkie 16lb boy. His parents are 5-7lb standard color yorkies. 2 of the 6 were born chocolate. His sister was noticeability smaller in size at 9 weeks old. At the age of 9 months Chunk was diagnosed with retina degeneration and is now totally blind. I know this is where God wants Chunk to be. He has brought us so much happiness and he gets around just fine in our home and trailer. We have 2 other dogs who the Dr. say are his guide dogs. I advised the breeder of Chunk's condition and advised her that his parents are carriers of this defective gene that causes blindness. I can't believe she hadn't been informed of this before. I also don't like the fact that that she is to this day selling the litters at $950 for a male chocolate yorkie. Last year we paid $700 for Chunk I doubt that she is telling her customers that blindness might be possible. Her name is Robbie Harris from La Habra Heights, CA. We have now regrets about Chunk but not anyone would feel this way especially after paying this much money.
A righteous man regards the life of his animal..... Proverbs 12:10
The last sentence should read: "We have NO REGRETS about Chunk but not anyone would feelthis way especially after paying this much money. " Also, do you think his blindness is due to him being a chocolate yorkie? His Canine Eye Specialist said no that some yorkies are carriers of this gene

Dougal&Little 11-21-2008 06:35 PM
Hi ya. I did some biology a Uni and I think that the genetic controls for dog colour are much more complex than simple mendellian genetics (Gregor Mendel - Wikipedia, the free encyclopedia). Mendellian genetics is the simple recessive / dominance genetics we all know about.

There's so much we don't know about genetics - I'd be more inclined to think it had something to do with the particular mum and dad than anything else.

I don't know how relevant this is but in humans - females' eggs start degrading and by the time a woman is in her forties there can be a higher incidence of genetic defects existing in the eggs. Possibly 7 years old in a yorkie equates to 40 odd in a human (about 1/2 way through the average life span). I'm not a breeder so I wouldn't know.

Plastic and rubber are very inert substances. I would be surprised if they reacted with the sperm.

ajprez73 11-21-2008 07:05 PM
I have never seen a chocolate yorkie before, but I think that he is absolutely adorable and unique. He is just too cute!

TLC 11-21-2008 07:07 PM
Quote:
Originally Posted by cgennawey (Post 2342362)
The last sentence should read: "We have NO REGRETS about Chunk but not anyone would feelthis way especially after paying this much money. " Also, do you think his blindness is due to him being a chocolate yorkie? His Canine Eye Specialist said no that some yorkies are carriers of this gene
I honestly do not know....My Mom has a chocolate yorkie and her vision is ok, her eyes are extremely light, light brown, and I know they tear a lot outside and my Mom does feel that they are very sensitive to light. She tries to keep her eyes blocked from direct sunlight (if possible) b/c she is afraid she will get hurt :(

jencar98 11-21-2008 07:52 PM
You might be surprised at how many respected breeders have had a genetic anomaly occur in a pup - it does happen. I would be more inclined to think your chocolate pups are not because of a genetic mutation that resulted from AI and plastics.

Pinehaven 11-23-2008 06:17 AM
Quote:
Originally Posted by wayne2075 (Post 2341752)
Hi, there are some questions arising about how plastic or rubber may have caused the mutation to Chocolate. I have studied how mutations are caused. A mutation can be caused from 2 types of radation, or chemical or virus. I know my yorkies were not exposed to radation. I am not sure if this reaction to plastic or rubber in the artifical breeding is the cause only could be. I also know my yorkies do not have ressive genes for chocolate. When I first saw the puppies I was both shocked and dumfounded to see the Chocolate color. Why would both puppies born be chocolate unless this is a true mutation caused by something and not passed down? My yorkies do not have any chocolate in their history and not inbred. Inbreeding might cause defects as the chocolate color and many other undiserable traits. If you question my opinions on this being a mutation, please give me some scientific info that I can research. A photo of Misty the female that had the chocolate puppies is attached. She has 9 champions in her pedigree of the Rothby line. She is now 7 years old. wayne
Never say never, most folks who produce off colored pups, never thought their dogs carried recessive genes too. :-)

Maybe some of the chocolate breeders who are more familiar with the chocolate bloodlines, can find a link to where the gene may have come from in your pedigrees? I think that may be the easiest way to start researching?

Please e-mail me privately and I'll be happy to give you a few names to start with.


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