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by Am Virk on 08 April 2010 - 17:04
This is something on found on the net and found interesting, enjoy.
Sexual isolation from the greater population of dogs leads almost inevitably to dire consequences for those dogs that get trapped in a pure breed. A severe problem with locking dogs up reproductively is the problem of inbreeding. Once the stud book is closed on a breed, it is unbelievable how fast they become inbred. How fast will inbreeding occur? If you have just one founding sire then all the first generation will be siblings or half-siblings. By the 2nd generation, all breedings are inbreedings. If there are 2 founding sires (unrelated), then the third generation is inbred. If I start with 500 unrelated founding males when I closed the stud book, then by the tenth generation I will start inbreeding. That could be in as little as 15 years.
If I created a breed of dogs in 1900 (that is, closed the stud book) with 500 males, currently that breed would have been inbreeding for 92 years. They are caught in a genetic trap. If members of a breed club begin to breed to this year's Bundeseiger champion only, then inbreeding starts next year. If you eliminate from the breeding program all animals that exhibit, for example, retinal atrophy or hip dysplasia (which is a given) then the inbreeding coefficient increases more rapidly. The breed is in big trouble.
The old fashioned breeders who continue to create dogs by cross-breeding for specific, specialized tasks, like the lurcher breeders of Europe or the sled-dog drivers, are, by and large, disdained by pure breeders. Improvements of plants and animals, when performance is the goal, relies on cross-breeding and hybridization. The successful techniques of cross-breeding of working dogs are practically unheard of outside their fields. What the purebred breeders forget is that golden retrievers and every other modern breed are products, originally, of cross-breeding. That is why they have been good dogs. At least in the beginning, they had the health, and energy that are known as hybrid vigour.
Can you see "Ego" written in the above? The obtuse arrogance of the pure-bred crowd will be it's own demise. Interestingly, from my own empirical evidence, not all outstanding protection dogs have to be of the known, " preferred" breeds that we know of. To name a few: Boxer/Rhodesian Ridgeback, Irish Wolfhound/Bouvier, GSD/Rottweiler, Lab/Bull Mastiff - were outstanding. That is why, on a personal note, I am interested in the Black Russian Terrier.
Sexual isolation from the greater population of dogs leads almost inevitably to dire consequences for those dogs that get trapped in a pure breed. A severe problem with locking dogs up reproductively is the problem of inbreeding. Once the stud book is closed on a breed, it is unbelievable how fast they become inbred. How fast will inbreeding occur? If you have just one founding sire then all the first generation will be siblings or half-siblings. By the 2nd generation, all breedings are inbreedings. If there are 2 founding sires (unrelated), then the third generation is inbred. If I start with 500 unrelated founding males when I closed the stud book, then by the tenth generation I will start inbreeding. That could be in as little as 15 years.
If I created a breed of dogs in 1900 (that is, closed the stud book) with 500 males, currently that breed would have been inbreeding for 92 years. They are caught in a genetic trap. If members of a breed club begin to breed to this year's Bundeseiger champion only, then inbreeding starts next year. If you eliminate from the breeding program all animals that exhibit, for example, retinal atrophy or hip dysplasia (which is a given) then the inbreeding coefficient increases more rapidly. The breed is in big trouble.
The old fashioned breeders who continue to create dogs by cross-breeding for specific, specialized tasks, like the lurcher breeders of Europe or the sled-dog drivers, are, by and large, disdained by pure breeders. Improvements of plants and animals, when performance is the goal, relies on cross-breeding and hybridization. The successful techniques of cross-breeding of working dogs are practically unheard of outside their fields. What the purebred breeders forget is that golden retrievers and every other modern breed are products, originally, of cross-breeding. That is why they have been good dogs. At least in the beginning, they had the health, and energy that are known as hybrid vigour.
Can you see "Ego" written in the above? The obtuse arrogance of the pure-bred crowd will be it's own demise. Interestingly, from my own empirical evidence, not all outstanding protection dogs have to be of the known, " preferred" breeds that we know of. To name a few: Boxer/Rhodesian Ridgeback, Irish Wolfhound/Bouvier, GSD/Rottweiler, Lab/Bull Mastiff - were outstanding. That is why, on a personal note, I am interested in the Black Russian Terrier.
by GSDtravels on 08 April 2010 - 18:04
What was this research based on?
by RONNIERUNCO on 08 April 2010 - 19:04
IM VERY INTERESTED IN A WHITE SWEDISH FOX.
by GSDtravels on 08 April 2010 - 19:04
Don't believe everything you find on the internet.
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