To answer the question on averages...
According to the OFA: 12093 Newfs have been evaluated since 1974. Of these only 7.2% have excellent hips and 25.7 are dysplastic. There are no results for how many are good or fair so you can only assume that the majority of Newfs are not dysplastic at the time of evaluation.
Of 142 breeds for which trends have been charted, Newfs are the 20th (worst) affected breed. Of course, the problem with looking at these numbers is that as the database grows with more and more submissions, the numbers can change dramatically. Newfs are fairly well represented but some of the breeds listed had very few submissions in comparison while others had a great deal more.
Edited to add:
And while I'm on the subject, I highly encourage EVERYONE including pet owners to have their dog evaluated for hips/elbows and other diseases common to Newfs and then entered into the open database regardless of the results. The information is invaluable to breeders, puppy buyers and people in the medical field. See
CHIC Requirements for Newfoundlands for a list of the tests that are commonly performed.
[ 12-29-2006, 08:30 AM: Message edited by: wrkndogs ]