Breeding Good HIPS with Good HIPS - Page 2

I have a friend with a bitch from 6 generations of OFA certified breedings. Of her litter of 10, 9 are OFA certified. 1 did not.

If I had gotten the one bad set of hips from this litter, then I would have probably been screaming that OFA, ZW, Penn hip, etc. are useless indicators.

I don't think it is possible to eliminate HD from the GSD. However, I do feel that certified dogs put you way ahead of the game.

Rik

If both parents come from "good hip bloodlines" then the chances of producing puppies with good hips are far better then if both parents come from "bad hip bloodlines".

I read a study recently that if 2 dysplastic dogs are mated, the chances are that over 50% of the puppies will also be dysplastic. If 2 excellent dogs are mated chances are that below 15% of the puppies will be dysplastic........Unfortunately that's as good as it gets for now.

This was a study done with Labrador Retrievers. I imagine that GSD's would be similar.

 

"Are breeders winning the battle against Canine Hip Dysplasia (CHD)?

In a 1992 report on the incidence of CHD in purebred dogs, the OFA reported a 79% decrease in the occurrence of CHD when comparing dogs bred between 1972-1980 with dogs bred between 1981-1988. Though upon first glance, this data suggests a significant advance in the control of CHD, it was recognized that some variables had not been controlled for in the study. For example, this data would only be relevant if all hip radiographs (X-rays) were sent to the OFA for review. However, a review of records at the Veterinary Hospital of the University of Pennsylvannia (VHUP) indicated that only half of clients having their dogs x-rayed for the purpose of acquiring OFA certification actually ended up submitting the radiographs to the OFA for review. It was determined that clients only submitted radiographs of dogs having the greatest likelihood of being certified. In comparison to the OFA's reports for breed-specific incidence of CHD, a clinical survey conducted at VHUP demonstrated breed-specific incidence of CHD to be 2-3 times higher than reported by the OFA.