The English Guernsey Cattle Society abide by the AHDB Dairy and Holstein UK established Code of Advertising.
The information provided is taken from the figures for each bull following the Breed evaluation in December 2018.
The source of this information is as follows
AHDB – Mainland UK Bulls
CDCB – USA Bulls.
CDN – Canadian bulls.
This coincides with the information that appears on the Reports for All Bulls, Young Bulls and Cows following the December Proof Run that are available on this website under Data Analysis.