The American Guernsey Association is the official breed registry organization for Guernsey dairy cattle in the U.S. Founded in 1877 as the American Guernsey Cattle Club, the association has registered over 3 million Guernseys. It focuses on advancing the Guernsey breed, known for producing high-butterfat, high-protein milk with less feed consumption. The Association supports genetic improvement, provides leadership, and promotes programs that enhance the value of Guernsey cattle for breeders and dairy producers.