Holstein gestation is approximately nine months. Red factor causes this unique colouring. Friesians have also been disadvantaged through the comparison of their type to a Holstein base. The A in front of the registration number was discontinued in 1976 and the –Alt suffix was dropped in 1980, but –Red was continued. After the New World was settled, and markets began to develop for milk in America, dairy breeders turned to Holland for their seed stock. After about 8,800 Friesians (black pied Germans) had been imported, disease problems in Europe led to the cessation of exports to markets abroad.[2].

In 1952, a sire in an artificial insemination (AI) unit in the US was a carrier of red coat colour. A mature Holstein cow weighs about 1500 pounds and stand 58 inches tall at the shoulder. The Frisii bred the same strain of cattle unadulterated for 2,000 years, except from accidental circumstances. Its existence was undoubtedly common knowledge among breeders in both countries, but until that time, it had not been mentioned in print. These associations merged in 1885 to found the Holstein-Friesian Association of America, the Holstein Association. Holstein cows are perhaps the most recognized breed of dairy cattle and are the most common dairy breed in the U.S. The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707. The clone is a result of the combined efforts of CIAQ, L'Alliance Boviteq Inc, and the Faculté de médecine vétérinaire de l'Université de Montréal. Holstein Canada dropped the suffix Red as a part of the name in 1990, but continued to carry it as part of the birth date and other codes field. Holsteins have distinctive markings, usually black and white or red and white in colour, typically exhibiting piebald pattern. William A. Russell, of Lawrence, Mass., and three animals from East Friesland, imported by Gen. William S. Tilton of the National Military Asylum, Togus, Maine, formed the nucleus of the Holstein Herd Book.[6]. However, with animal welfare concerns surrounding the practice of dehorning, the interest in polled genetics is growing rapidly.[24]. 'Blue' is also a known colour. Black and white cattle from Europe were introduced into the US from 1621 to 1664. Between the 13th and 16th centuries, the production of butter and cheese was enormous. In 1909, though, the society was formed as the British Holstein Cattle Society, soon to be changed to British Holstein Friesian Society and, by 1918, to the British Friesian Cattle Society. 'Blue' is also a known colour.