Quote:
Originally Posted by Lovetodream88  Most breeders don’t know their dog would produce a blue born and generally It is not something tested for and I’m not sure it can be. Most breeders if they get a blue born will never breed the pair again. Some breeders will retire both dogs and some will just mate them with others. Blue borns are very rare. |
Being a carrier of a recessive D Locus allele is definitely something that can and is tested for, although most breeders probably don't do it because it's so rare. Genetic testing for canine hereditary defects has come a long way. Here is a link to the list of genetic diseases that can be tested for by Animal Genetics, a highly reputable company:
Animal Genetics
Here is a link to their coat color tests (including D Locus):
Canine Color Index
HealthGene in Canada is another reputable firm, and they also do DNA testing for hereditary diseases as well as coat color (including D Locus) although their list of tests is smaller than Animal Genetic's list:
Canine DNA Testing | Canine Coat Color Testing ? HealthGene