Nor-Bert Colby Connie, a 14-year-old Holstein, has set the record for life-time milk production at 486,300 pounds (about 212,000 litres).
The previous record was 478,200 set by Chrome-View Charles.
Connie is owned by Nor-Bert Farm of Bremen, Indiana.
Connie produced 27,062 pounds of fat and 17,737 p;ounrds of protein, also records for a Holstein.