Why do most breeders use OFA rather than PennHIP to screen for hip dysplasia?

Most breeders prefer OFA (Orthopedic Foundation for Animals) over PennHIP for screening hip dysplasia because OFA is more widely recognized and established, making it the standard in the breeding community. OFA evaluations are based on subjective visual assessments by certified veterinarians, which many breeders find easier to understand and utilize. Additionally, OFA's long-standing reputation provides breeders with a reliable history of hip health in their breeding lines. This widespread acceptance and familiarity lead to a preference for OFA among breeders.