Learn about Guernsey activities, programs and services at www.usguernsey.com
The average annual milk production for U.S. Guernsey cows is well-documented by NDHIA through milk recording.
Guernseys do not have any known undesirable genetic recessives.
The American Guernsey Association provides genomic and parentage testing for registered Guernsey cattle upon request.
U.S. Guernseys are ranked on the Production Type Index (PTI). Traits in this index include:
The Guernsey PTI formula was last updated in April 2020.