The story of Kennel Club dogs is pretty much the same from one breed to the next:
- A relatively small numbers of dogs are brought into the Kennel Club;
- The registry is closed so no new genetic material can find its way in;
- The show ring selection system results in a relatively small number of dominant (ribbon-winning) sires being elevated in the gene pool;
- The breed splits due to differences between types (coat color, size, lay of the ear), further reducing the already-small gene pool;
- An extremely condensed gene pool (10,000 dogs may have the genetic diversity of 50) means that negative recessive genes are able to easily find each other and double down within a litter, resulting in offspring with disease or deformity.
With any Kennel Club breed, the only three variables in this story are:
- The genetic quality of the dogs in the original Kennel Club pool;
- The length of time the dogs are in the Kennel Club, and;
- The degree to which the breed standard calls for negative morphological selection.
The genetic quality of the original Kennel Club pool is obviously important, but it cannot provide salvation, for even a pool of dogs without negative genetic traits is doomed under a closed registry and show-ring selection system.
The reason for this is the pairing of two phenomenon called genetic mutation and genetic drift.
Most genetic mutations are recessive, and remain unseen and unexpressed in the form of visible defect. In a large and "wild" population of animals most of these negative genes will "drift" out of the population just as they drifted in.
In a closed registry system with a relatively small number of dogs, however, negative recessive genes can quickly find each other and spread through the population -- especially if they are passed on by a show-winning sire with many offspring.
The result is a rapidly rising level of "spontaneous" disease and deformity out of what was once thought of as a "healthy" population of animals.
Time is a variable in the Kennel Club destruction process for the simple reason that some breeds have not been in the Club long enough to be completely wrecked.
It takes time (about 50 years in practice) for a small, but diverse population of dogs to become inbred to the point that recessive genes start to dominate, resulting in a noticeable increase in infecundity, mortality, deformity, and disease.
Negative morphological selection is the third variable, and the easiest to see because it is so extreme and so overt.
Negative morphological selection is simply the practice of show ring breeders and Kennel Club standard writers to positively select for negative health traits.
These negative health traits include (but are not limited to) extreme size (very small dogs or very large dogs), dwarfism, bizarre hip angulations, overly wrinkled skin, flat faces, massive heads, and the elevation of certain coat colors (such as merle) and eye colors (blue) which are linked to deafness.
Contrary to what some folks think, the history and health problems of the Cavalier King Charles Spaniel, the German Shepherd, the Pug, and the Rhodesian Ridgeback, to name a few of the dogs shown in the BBC special Pedigree Dogs Exposed, are not unusual -- only the degree to which they are easily visible to the naked eye.
Nor is a genetic bottle neck within a breed unusual in the Kennel Club. In fact, it is what the entire system is designed to do. Hence the name: "pure breed."
Genetic diversity is the opposite of what the Kennel Club wants -- what they want is "conformity" to a beauty show standard. Hence the name "conformation show."
Below are links to Kennel Club health survey results. I have selected one breed from every canine group, but you can see other breeds here.
Overall, The Kennel Club reports that of the 36,006 dogs surveyed, 37.4% had at least one reported health condition, and that the average age of the dogs surveyed was just five years.
Of the health problems reported, 14.4% were reproductive (Pyometra, false pregnancy, dystochia, infertility, cryptorchid, irregular heats), 12.9% were musculoskeletal (arthritis, cruciate ligament injury, hip dysplasia, patellar luxation), 10.5% were dermatologic, and 9.6 were ocular (cataract, entropion, corneal ulcer, epiphora, KCS, cherry eye, distichiasis).
And to repeat: Nearly 40 percent of dogs had one more more health problems even though the average age of the dogs in question was only 5 years old!
Scottish Terrier (PDF) - Terrier Group
- The median age at death for Scottish Terriers was 10 years and 3 months.
- More than 47.5% of deaths were from cancer.
- In a dog population with a median age of 4 years and 11 months, 46% were reported to have at least one reported health condition. Of these conditions, 28.3% were issues or reproduction (dystochia, infertility; infertility; pyometra; agalactia; vaginitis), 15% were dermatological, and 11% were respiratory.
The Flat-coated Retriever (PDF) - Gundog Group
- The median age at death for Flatcoated Retrievers was 9 years and 10 months.
- More than 54% of deaths were from cancer.
- In a dog population with a median age of 5 years, 41% were reported to have at least one reported health condition. Of these, 15.2% were musculoskeletal (arthritis; patellar luxation; lameness, dysplasia, spondylitis), 13.1% were benign neoplasia(lipoma; histiocytoma; cysts; fibroma; granuloma), 12.0% were reproductive (false pregnancy; pyometra; irregular heat cycles; dystochia), 9.8% were dermatological, 8.3% were gastrointestinal (bloat, colitis; foreign body obstruction; pancreatitis), and 7.8% were ocular (distichiasis, goniodysgenesis, entropion, glaucoma).
Bernese Mountain Dog (PDF) - Working Group
- The median age at death for Bernese Mountain Dogs was 8 years.
- More than 45% of deaths were from cancer.
- In a dog population with a median age of 4 years, 46% were reported to have at least one reported health condition. Of these, 31.5% were musculoskeletal (arthritis, dysplasia), 13.9% were reproductive (pyometra; false pregnancy; dystochia, infertility), 9.4% were dermatological, 8.4% were gastrointestinal, and 6.4% were ocular.
Deerhound (PDF) - Hound Group
- The median age at death for Deerhounds was 8 years and 8 months.
- More than 24% of deaths were from cardiac problem, with cancer accounting for an additional 18.8% of deaths.
- In a dog population with a median age of 4 years and 2 months, 32% of dogs had at least one reported health condition. Of these, 17.5% were reproductive (pyometra, vaginitis, dystochia), 14.8% were musculoskeletal (arthritis, dysplasia), 13.2% were gastrointestinal (bloat, diarrhoea), and 10% were respiratory.
Border Collie (PDF) - Pastoral Group
- The median age at death for Border Collies was 12 years and 3 months.
- More than 23% of deaths were from cancer. Another 9.4% were from strokes, and 6.6% from cardiac issues.
- In a dog population with a median age of 5 years, 29% were reported to have at least one reported health condition. Of these 18.6% were musculoskeletal (arthritis, lamenes, dysplasia), 14% were reproductive (dystochia, false pregnancy, cryptorchid), 11.6% were respiratory, 8.7% were dermatological.
British Bulldog (PDF) - Utility Group
- The median age at death for Bulldogs was 6 years and 3 months.
- More than 20% of deaths were from cardiac issues, with an additional 18.3% from cancer, 4.4% from respiratory failure, and 4.4% from strokes.
- In a dog population with a median age of 3 years and 1 month, 46% were reported to have at least one reported health condition. Of these, 31.6% were ocular (cherry eye, entropion, dry eye, corneal ulcer), 15.2% were dermatological, 10.8% were reproductive (dystochia, infertility, false pregnancy, cryptorchid, pyometra), 10.4% were respiratory, 9.2% were musculoskeletal (arthritis, lameness, dysplasia, patellar luxation).
Pekingese (PDF) - Toy Group
- The median age at death for Pekingese was 11 years and 5 months.
- More than 23% of deaths were from cardiac issues, and another 9% were from neurological issues.
- In a dog population with a median age of 5 years, 37% were reported to have at least one reported health condition. Of these 20.4% were issues or reproduction (infertility; false pregnancy; cryptorchid; agalactia; eclipse; mastitis; pyometra), 13.9% were neurologic (intervertebral disc disease, deafness), 11.1% were dermatological, 10.2% were respiratory, 8.3% were ocular, and 7.4% were cardiac.
Clearly, different breeds have different health issues, but just as clearly, none of the breeds listed can be said to be problem free.
In fact, the breeds listed above, are so often fraught with problems that they would be subject to massive class action litigation and product recalls if they were a manufactured commodity.
So how does the Kennel Club get away with a business plan that guarantees that most dogs sold "with papers" will die sooner and have more expensive health conditions than most run-of-the-mill mutts?
The answer can be found in the all-absolving language to be found on The Kennel Club's web site which says that:
"The Kennel Club makes no warranty as to the quality or fitness of any puppies offered for sale and can accept no responsibility for any transaction between purchaser and vendor arising from publication of the listing."
In short, the Kennel Club offers no warranty and accepts no responsibility for the genetic wreckage you may be about to buy.
Good luck, and you're on your own.
And don't let us know if it doesn't work out!
.
"Parson Russell Terriers" go to the show. And never mind that the Reverand Jack Russell refused to register his own dogs. To read more about the history of this breed, click here.
13 comments:
Thank you for such a cogent, provocative post.
As a basset hound breeder I'm struggling to find the best way forward. I love my breed, love bassets and, armed with a PhD in my bag, know all about questioning known praxis and lookng for new solutions.
In Sweden where I am based we have a very small pool of dogs and at present two males have sired a large portion of the population. Now I'm vehmently opposed to this and would like to see my breed club set up guidelines that stop this kind of breeding. For example, French Bulldog club here limits the number of times a dog can be used at stud. Exceeding the set limit results in expulsion from the club.
Now as a single breeder I can write letters and oppose this, stick to my own breeding plans (using dogs from outside Sweden, constantly outcrossing), but as a single breeder I want to look to the Kennel Club for support and leadership. Here in Sweden I think the KC is doing something different to what the BBC documentary showed in the UK, but even so there are clear distinctions between what occurs at national level and at breed club level.
Bottom line, as well as criticising the KC, how can we move the dicussion positively forward. What should we as breeders do to improve the health of our breeds?
I'd like to see some suggestions as well as criticisms .
More on that in a post maybe later this week Jontus. The basic outline is: 1) Ban high coefficients of inbreeding; 2) Register only adult dogs not litters; 3) Only register dogs after a vet check; 4) Register any adult dog that looks like the dog and has only one outcross in a four-generation pedigree; 5) Return to original breed standards and/or rewrite standards to prevent genetic deformity, disease and exageration.
P
JONTUS! Best way to produce healthy, functional Basset Hounds--take them hunting! You will learn more in five minutes watching your dogs in the field than you will in twenty years trotting them around a show ring!.... L.B.
In 2005, Great Scots Magazine, for which I write a health column, published the results of a health survey it had distributed to its 2,000+ subscribers, most of them owners of pet Scotties produced by the full spectrum of show breeders, home breeders, and puppy millers (http://www.tartanscottie.com/pages/GSM_2005_Health_Survey_Report_1column.pdf). The response rate to the survey, 22%, was excellent, and the results were similar to those published by the British Kennel Club. Overall, however, the incidence of cancer in American Scotties appears somewhat higher in the GSM survey, affecting 1 out of every 2 dogs. The average age at death was also somewhat younger than in the KC study: 10.15 years. What is most remarkable about these figures, especially in view of the fact that the Scottish Terrier is among the breeds recognized by the AKC during its infancy, is the following:
--When compared with the results of a Scottish Terrier of American Club health survey conducted in 1995, mortality in the Scottish Terrier rose dramatically in the decade 1995-2005, with average age at death declining by nearly one year (11.2 years in the STCA’s 1995 survey v. 10.15 years in the 2005 GSM survey).
--In 2004, Purdue University published the results of a research study linking the high rate of TCC in the Scottish Terrier to herbicides and indicating that the incidence of this cancer in the breed is 18 times that in any other (J Am Vet Med Assoc 2004;24:1290—1297). Since then I have read (and I’m afraid I don’t have cites for this) estimates of TCC in Scotties that rage from 20-30 times that in other breeds. Whether the rate is 18x or 30x doesn’t make too much difference; to me, the 18x figure is clear evidence of the deleterious effect on Scotties of more than a century of closed studbook inbreeding. If one wants more evidence of this conclusion, here it is: Frequency and distribution of alleles of canine MHC-II DLA-DQB1, DLA-DQA1 and DLA-DRB1 in 25 representative American Kennel Club breeds, Tissue Antigens. 2005 Sep;66(3):173-84. The major histocompatibility complex in the Scottish Terrier is, to use layman’s lingo, broken.
Lisa, thanks for this excellent information -- I will check it out. I may write a piece about terrier health if I can figure out a few outlier bits. Here's an interesting excercise: look at the differential mortality rates between Cesky Terriers, Scotties, and Cairns.
P
Great post.
I love the old poster you used - Great Danes on the left and a Saint on the right, I guess.
It's quite amazing how breeds change - even in my lifetime one of your examples here, the Pekingese, has changed so much he's hardly recognizable compared with the ones when I was a kid in the 50s. The face today is like a flat mask, the gait strange, the coat much drier, fluffier and longer and the legs are shorter.
I guess it's 50+ years' more inbreeding.
I like the old style breeds better, in most cases. They looked more like dogs.
I finally had time to watch the BBC documentary last night. AMAZING. For once, the message wasn't dumbed down or twisted to have two sides when there is a clear right and wrong side. Congratulations and thank you for your part of making this documentary happen.
Also, I have been thinking about some of the working gun dog breeds that are a closed registry--Irish red setters, Vizlas (sp?), etc. How are they doing inbreeding wise? Do you predict they'll have to outcross at some point to bring in new blood. I get the impression that some of the people managing these breeds are just as averse to outcrosing as the show people. Even the Red Setter, which had to outcross show lines with working English Setter lines to recreate a working line, isn't allowing any new blood in. What's up with that?
@LB
My dogs work in the forest everyday, tracking and hunting when its season.
I personally believe in bassets that can work for hours and run around. I don't do couch potatoes, even though they're European bassets.
@PB
Looks like good suggestions. I do think it is important we bring in new blood. Look forward to the later post you talked of.
JONTUS--if you take your Bassets out and let them hunt--you are already ahead of most conformation showers! Then, when you get into it with a "show-only" type, don't let them convince you that what your dogs taught you in the field, is not the "standard"!
What we need is some rich old fellow or lady to leave some money to start a registry based upon sound principles.
Maybe someone could convince the managers of the helmsly money to do that. She left it for dogs and cats and such.
I'd like to see something like the program used by some of the the sport horse registries; adult horses of correct breed type with a sufficient performance record are issued 'limited' papers and offspring can be provisionally registered. If sufficient numbers of the offspring mature to the correct type and performance levels, the papers become 'approved' and they get admitted to the main studbook.
Hello Mr P Burns,
Can u tell me where can I download info. on other breeds.
I have this old link saved
http://web.archive.org/web/20130121012350/http://www.thekennelclub.org.uk/item/570
This page lists all breeds but I think the new link is better and this old link no longer works.
Please help.
See this >> http://www.thekennelclub.org.uk/vets-researchers/purebred-dog-health-survey-results/
Post a Comment