Holstein Friesians (often shortened to Holsteins in North America, while the term Friesians is often used in the UK) are a breed of dairy cattle originating from the Dutch provinces of North Holland and Friesland, and Schleswig-Holstein in Northern Germany and Jutland. They are known as the world's highest-production dairy animals. The Dutch and German breeders bred and oversaw the development of the breed with the goal of obtaining animals that could best use grass, the area's most abundant resource. Over the centuries, the result was a high-producing, black-and-white dairy cow. With the growth of the New World, markets began to develop for milk in North America and South America, and dairy breeders turned to the Netherlands for their livestock. After about 8,800 Friesians (black pied Germans) had been imported, disease problems in Europe led to the cessation of exports to markets abroad.