I don't believe that with any breed of dog you could get this sort of genetic bottleneck.
That article is shocking, I had no idea they were all that closely related. That is strange!
That article is shocking, I had no idea they were all that closely related. That is strange!
I ran into some mathematical formulaic type issues (need more school) but its not as far off as you might think! It really shocked me-hence why I see no need to do this to an animal. Yes you might distill all that is great in those lines, or you may unleash a horrible health issue that will haunt that breed for years to come.
Ever heard of a stallion called Impressive? A whole pile of inbreeding/line breeding produced quarter horses that one on the line, and dropped dead in a horrible fashion. The problem was by the time people started to realize what happened he was all over most of the top halter horse pedigrees. The AQHA world is still dealing with that.
http://www.foundationhorses.com/impressive_syndrom.htm for anyone thinks that because their lines appear clean they should/can intensively line breed without risks. This syndrome was not seen before him, it is believed to be a mutation in him. HYPP was not seen right away in his offspring so he was bred to everyone, and they were often bred back to him or relatives.
"Of the top 15 halter horses in 1992, 13 were descendants of Impressive. Even at the age of 23, Impressive himself was fourth on the list. In 1993, it was estimated that more than 55,000 Quarter Horses, Paints, and Appaloosas world-wide bore his pedigree."
The only good thing about this issue is that is controlled by a single gene and that it is dominant. It would have been much more insidious if it had been recessive.
I am not a fan of people who play Russian Roulette with an animals genome just to produce a pretty dog.