Tracking Merles: 10 years later. (Updated)
A tool not a solution.
© Jean A. Delisle
1874 Kennel Club (UK) Stud Book
Numbers create clarity and commitment.
The Stud Books are an excellent source and most important tool for accurate information about a breed. It is the official record of the pedigree of purebred animals, a record of the lineage. They document the first time any registered dog (male or female) is used to breed a registered litter of purebred dogs.
For the year 2012, 4 Merles were in the Stud Book out of 1,356 or 0.29% of all new entries. Fast forward 7 years later, Merles account for 17.46% of the total dogs entered in the Stud Book for 2019.
2012 · 2020
Source = Compiled with AKC Stud Books
Merle is a pattern of coloring observed in the coat of the domestic dog and is characterized by patches of diluted pigment. This trait is inherited in an autosomal, incompletely dominant fashion. Dogs heterozygous or homozygous for the merle locus exhibit a wide range of auditory and ophthalmologic abnormalities, which are similar to those observed for the human auditory - pigmentation disorder Waardenburg syndrome. (Retrotransposon insertion in SILV is responsible for merle patterning of the domestic dog)
Jean Delisle is a Canadian Kennel Club Sporting & Toy Group judge. Member of the American Spaniel Club Archival Work Group. Maintain and update the Cockers-Worldwide Pedigree website. He bred American Cocker Spaniels under the prefix Kebec's with Pierre Talbot since the early 1980s.Acknowledgments.
American Kennel Club Statistics
Copyright 2020, Jean A. Delisle. No part of this content may be reproduced without written permission.