Most importantly, it instituted a voluntary programme, CPH 45 (Certified Pre-Conditioned for Health), to provide assurances to buyers that they would be purchasing high-quality calves that would perform well when on feed. Participants are required to follow recommended weaning and inoculation practices and provide records to the sales facility. At designated dates and places a number of producers agree to bring cattle to a specific sales facility where they are grouped into uniform truck-load lots and sold collectively as CPFI-45 certified. Since the calves have ear tags that identify the producer any subsequent problems can be traced back to a specific farm.