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guy

reading pedigrees

The gwp thread about bloodlines i becoming very interesting.   To make it more generalist I have started a new thread.

I am particularly interested in the idea of looking way back in a pedigree - partly because the Internet can help so much.  However my question to get the topic rolling i how far back is necessary?  I have read that a line can be considered pure in five generations, whereas another says 'trace the lines back to the three original imports'  Whilst both cannot be right, both may not actually be wrong - but for different reasons; which I would like to understand.
Ghilliegumdrop

I believe that when Bruce Cattenach crossed his Boxers with Corgis, to get the tailless gene into his line, he was breeding pure Boxers again in five generations and thats when the KC registered them on the active register..
Mike

Define pure Wink
guy

Pure - breed to type in F1, F2, F3 etc.
BritAnnie

This is what Bruce said in one of his articles about registration of his 4th gerneration boxer cross:-
Quote:
Entry to the KC Breed Register seemed possible under Regulation B.2c of the KC Regulations for Classification and Registration (page 3.21 of the 1997/1998 Yearbook). This concerns dogs of impure, or unverified breeding. I put the case for registration to the Kennel Club together with a copy of my original letter to Martin Sinnatt and a copy of his positive reply. I also provided all the details on the successive generations of crosses, including the photographic evidence, and the fact that blood samples for DNA analysis had been collected at each generation. After much time and no doubt much discussion I was advised that the case had been approved. I then had to register each generation from the first cross through to the last and this I did with the help and advice of Brian Leonard


All his work in introducing bobtails to boxers can be read here www.steynmere.com/.  Makes interesting reading.
BA
guy

his articles are most interesting reading http://www.steynmere.com/ARTICLES1.html(as are the links list on that site) however they do not answer my question


looking at a pedigree and how far back should you look?
kiwi

i like to look back as far as i can when reading pedigree's, in the gwp's case here we can look right back to ''chang and asta' and even the dogs before that to a point, i guess it has hardly any bearing nowadays but the throwback to chang can be seen even today, sweep's dad looks like a gsp with a goatee Laughing weather it's changs influence or the german dd blood on dams side is any ones guess Laughing  but it's all interesting to me.
i've bred alot of crossbred pigdogs and i spent alot of time doing the percentages of possible breeds and whelped many litters that turned out as i expected and also a few that went the other way, an understanding of genetic's and the breeds used in the x was a neverending learning curve, the throwbacks where always popping up in litters born 5 generations later.
we got given a greyhoundx pup once that was line bred from a line over twenty years old, now at 12 weeks old the pointy ears and black muzzle had me asking the guy that gifted the pup about his exact breeding as he looked like a german sheepchaser to me, this was confirmed as the foundation dog was a gsd x greyhound, no other gsd had been added since that first mating and yet twenty years later the gsd still came through, the pup grew up to be a very good pigdog but that sheepchaser blood caused his downfall as he couldn't help himself around sheep.
i'm sure some english lurcher breeders have similar experiences.

back to the pedigree thingy i like to see the positive things that the grandparents and great grandparents have bought to the parents and hopefully to the pups, and also it's good to see any improvements that have come through, both healthwise and in the feild.
Liz

Things can come out of the woodwork from many generations back - we found we had a hereditary fault in our litter of weimaraners by doubling up on one dog 6 generations back!

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