dogsites wrote:Can you provide me with some links to or references to this scientific research. I'd like to read it and then shoot holes in it.
Here are a few published scientific studies I've been able to dig up:
R. Beythien, Tierarten- und Hunderassenverteilung, Erkrankungshäufigkeit
und prophylaktische Maßnahmen bei den häufigsten Hunderassen am Beispiel
einer Tierarztpraxis in Bielefeld in den Jahren 1983-1985 und 1990-1992,
1998, Diss., Tierärztl. Hochschule Hannover
Mongrels less often in a vet surgery
B.N. Bonnett, A. Egenvall, P. Olson, Å. Hedhammar, Mortality in Swedish
dogs: rates and causes of death in various breeds, The Veterinary
Record, 12/7/1997, S. 40 - 44)
Insured dogs, "Mongrels were consistently in the low risk category" (S. 41)
A. Egenvall, B.N. Bonnett, P. Olson, Å. Hedhammar,Gender,
age, breed and distribution of morbidity and mortality in insured
dogs in Sweden during 1995 and 1996, The Veterinary Record,
29/4/2000, p. 519-57
Insured dogs. "The low risk for morbidity of mongrels also agrees with
previous findings that mongrel dogs are less prone to many diseases then the average
purebred dog." (S. 524) Second lowest morbidity and mortality of mongrels in ten "most
common breeds" (again, without size distinction in mongrels).
H. Eichelberg und R. Seine, Lebenserwartung und Todesursachen bei Hunden
I. Zur Situation bei Mischlingen und verschiedenen Rassehunden, Berl.
Münch. Tierärztl. Wschr. 109, 292-303,1995
Longer life expectancy in crossbreeds across all categories
A. R. Michell, Longevity of British breeds of dog and its relationship
with sex, size, cardiovascular variables and disease, Vet. Rec., 27 Nov.
1999, S. 625-629
"There was a significant correlation between body weight and longevity.
Crossbreeds lived longer than average but several pure breeds lived
longer than cross breeds, notably Jack Russell, miniature poodles and
whippets" (S. 627) , thus only small and toy breeds, as to be expected
G.J. Patronek, D.J. Walters, L.T. Glickman, Comparative Longevity of Pet
Dogs and Humans: Implications for Gerontology Research, J. Geront.,
BIOLOGICAL SCIENCES, 1997, Vol 52A,No.3, B171-B178
"The median age at death was 8.5 years for all mixed breed dogs and 6.7
years for all pure breed dogs… For each weight group, the age at death
of pure breed dogs was significantly (p=.0001) less than for mixed breed
dogs." (p. B173) Mongrels lived 1 - 3 years longer.
H.F. Proschofsky et al, Mortality of purebred and mixed breed dogs in
Denmark, Preventive Veterinary Medicine, 2003, 58, 53-74
Higher average longevity of mixed breed dogs.
We know that generally the larger the dog, the shorter the lifespan. However, in every weight category, mongrels live longer than purebreds. I also have access to some as yet unpublished data giving the same result. As I said earlier, all the scientific research shows that crossbreds on average live longer and are healthier lives tha do purebreds. I'd be very interested to see a single study that shows the reverse.
dogsites wrote:As has been said how can science put together quality data and quantify it when with cross breeds each dog has individual differences. Even the do called designer dogs are different for each litter as it takes many many many years to establish a well balanced standard. All humans differ too, but of course that doesn't mean you can't study the health of groups or populations. That's what the majority of health related research (be it human or animal) involves.
dogsites wrote:I would bet that this so called scientific research has been backed by and paid for by puppy mills and I know in my previous line of work a consultant doing a research paper will write what the person paying wants so much of this 'research' is invalid and a waste of time.It's an interesting idea that puppy mills would have any interest in funding scientific research, let alone the resources to do so, but I'm guessing you were joking. I can't imagine the average puppy buyers in a shopping mall (where most puppy mill dogs end up) picking up a scientific journal. As I'm sure you're aware, this kind of research is prohibitively expensive, and for that reason is either usually funded by large corporations, or (less often) by governments. I'm a scientist myself, and funding a single researcher at post doctorate level for a one year is usually estimated in the region of US$500K, and most of these type of studies involve multiple researchers over several years.
On a more serious note, if you want to find who's funding the studies, as with most things, follow the money. In the case of animal health research, that's the veterinary drug companies, who provide funding for virtually all the research done in this area. They have a multi-billion dollar vested interest in tracking the trends in dog ownership, and how it effects the consumption of products used in the diagnosis and treatment of canine disease,
dogsites wrote:Now having said that we still need to get back to the grass roots and educate the public as the public is neither reading the research or going to dog shows or researching breeds on the internet. Many are as much as we hate it shop buyers and buy on impulse as well as many simply picking up the local paper and seeing a mutt for free or cheap. Yes I know there are many that also pay very exorbitant dollars for mutts but I don;t think that is a majority more a small number but very vocal.
I am sure others have a other options or suggestions to reduce or remove back yard breeders but I think the above is s start in the right direction. SO how do we get this to happen, well it is actually quite easy. We as purebred dog lovers and breeders and buyers of purebred dogs need to be a lot more vocal, more vocal than the minority designer dog breeders and we need to constantly lobby our local, state and federal ministers and this needs to be done each and every month. You need to send a letter to each relevant body once a month every month until it is dealt with, yes every single month not just once. If we ALL did this how many would they get every month just image the annoyance factor let alone the content of the letters so if you want it go for it and do something about it I say 
Interesting topic so keep up the discussions
Cheers
GregImpulse buying puppy mill dogs from pet shops, the internet etc (be they purebred or crossbred) is a whole separate issue. By all means lobby for general animal welfare legislation to stop the sale of dogs in pet shops, shut down the puppy mills, place controls on backyarders, and encourage the spay/neuter of dogs sold as pets.
However, this won't do anything to improve the health of purebred dogs, nor change the perception by the general public of purebreds as an expensive health risk.
The people who are serious about their choice of dog
are reading the research (as are their vets) and there lies the problem. The general public believes that purebreds are unhealthy, and that mutts are a better bet. All the scientific studies agree, so what else are they supposed to think?
The health of purebred dogs can and should be improved, but urgent reform is required. Mandatory and transparent testing for known breed related diseases needs to be established, and limits placed on the breeding of affected dogs. Interpretations of breed standards that may be contributing to health and/or welfare related problems must be actively discouraged. Programs should be introduced to limit the use of popular studs, and encourage genetic diversity (there's an interesting article, writtenby as purebred breeder in the UK on this subject at
http://www.telegraph.co.uk/health/main.jhtml?xml=/health/2007/03/07/ftcrufts107.xml)
If we really want public perception to change, individuals, breed clubs, and national bodies need to take urgent steps to improve the health of the breeds they administer.