I came across this very intersting article about the importance of vertical pedigrees to breeding programs. It's a long read, but basically the summary points are:
- Most breeders focus on horizontal pedigrees when considering health (so they look at parents, grandparents, great grandparents etc.)
- Yet the article suggests that the vertical pedigree is actually of much more use (looking at siblings of the dog you're considering breeding, siblings of the dogs parents etc)
It uses 2 stud dogs to illustrate the point. It shows their horizontal/ historical pedigrees. Both look similar, with a background of normal hip OFA results. Yet when you look at the vertical/ current pedigrees, it's clear that one stud comes from a litter of dysplastic dogs and there's dysplastic dogs related to the parents. Therefore that stud dog suddenly looks a lot less attractive.
It suggests to me that breeders interested in improving health within their lines should be insisting that all pups they produce (for pets or breeding) be health tested so that they can have a full picture of health issues. Anyone know if this is being done by many breeders?