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Holstein-Friesian, breed of large dairy cattle originating in northern Holland and Friesland. Its chief characteristics are its large size and black and white spotted markings, sharply defined rather than blended. These cattle are believed to have been selected for dairy qualities for about 2,000 years.
1 Holsteins have a gestation period of nine months. 2  Holstein cows give more milk than any other dairy breed in the U.S. The average Holstein cow produces around 23,000 pounds of milk, or 2,674 gallons, of milk each lactation.olstein cows produce more pounds of milk than any of the other dairy breeds, with the average Holstein producing around 23,000 pounds of milk, or 2,674 gallons, of milk each lactation, which averages out to about 75 pounds, or almost 9 gallons of milk per cow per day.