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After Ruperts last litter with Ochre (Orange Roan Cocker) I have done some research into genetics to see why all of the pups turned out black and with some great help from Lisa Hedaux I think I have got to the bottom of it. It sounds a little complicated but please read on.
I'm 90% sure that Rupert is bbEE which means he is Brown and will therefore only produce Brown pups with another dog carring the Brown gene. If the Bitch does not have the Brown gene then the pups will be black no matter what colour she is. So Rupert will only produce Brown or Black pups. If you have a Gold, Red or Cream bitch and want cream or red pups you will need to go to a cream or red stud. I can recommend Lisa Hedaux's Cream Miniature Poodle stud Bailey, he is capable of producing Creams & Reds but not brown. He has also had all the relavent health checks and has a current clear eye certificate. Go to my links page for details of Lisa's website.
ChromaGene™Coat Color
Coat Color in Poodles
DNA research has identified the genotype associated with the brown (b allele) and cream- white-red-apricot (e allele) coloring.
What does this mean to breeders of Poodles?
VetGen has discovered that Poodles who are brown have the 'bb' genotype and Poodles who are cream, white, apricot or red have the 'ee' genotype.
The DNA Test for coat color in Poodles will allow breeders to test dogs who are NOT brown, to identify whether the b allele is present, as well as to test those dogs who are NOT cream, white, apricot or red, to identify whether the e allele is present.
The DNA test for b and e allows breeders the choice of producing dogs with brown coat color, as well as the opportunity of breeding away from the cream, white, apricot or red coat color.
The ChromaGene™ test will determine which one of the genotypes listed below your
Poodle is:
If your dog is black the possible genotypes are: BBEE, BBEe, BbEE, BbEe.
If your dog is brown, the possible genotypes are: bbEE, bbEe.
If your dog is cream, white, apricot or red with a black nose, possible genotypes are: BBee, Bbee.
If your dog is cream, white, apricot or red with a brown nose, your dog's genotype is bbee.
ChromaGene™ testing is valuable for determining if a breeding pair is carrying e, b or both and would therefore be capable of producing the brown or cream-white-red-apricot coat color.
B Locus
The B locus is responsible for the presence of brown, chocolate, or liver animals. It is also responsible for nose color. The gene associated with this locus is known as TYRP1. In breeds where the A locus does not come into play, any animal that has at least one B allele (and is not ee), will be black in pigmented coat. Those dogs, which have two copies of any of several b alleles will be brown. There are at least three such b alleles. Regardless of other loci, any animal with at least one B allele will have a black nose and pads, while those with any two b alleles will have a liver nose and pads.
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