Jeck was the grandfather of Ursus von Batu, the 2000 German sieger. But that was a LONG time ago. If this is indeed Jeck we're talking about, he would be too far back in the pedigree to have much influence.
The backmassing on Jeck is stronger than the backmassing on Fero...the dog did not have good hips....when 6 dogs in the 3rd and 4th generation are linebred on the same dog - that is backmassing and it can be strongly influential...even if the dog is in the 8th or 10 generation....
I came from being a student of Thoroughbred pedigrees and breeding...strong female families, long term programs over 10-12 or more generations, usingg "nicks" and identifying where issues originated are very much a part of looking at TB pedigrees....looking at a sales pedigree, the female side gets examined far more in depth than the male....the big prices go for horses with solid connections to production from female families.
That being said - it is nearly impossible to find showline dogs NOT backmassed on Jeck.
His father is Chewbacca von gratterhoff I can’t figure out how to post the link. I have my dog neutered and have no intention or desire to breed him. I must admit I rushed into buying him and was overwhelmed with all the pedigree info. Just trying to get an idea of where he comes from. I was told German show lines.