Livestock and livestock products account for over three-fourths of Utah's agricultural income. In 2003, there were an estimated 880,000 cattle and calves, valued at nearly $668.9 million on Utah farms and ranches. During 2002, hogs and pigs numbered 670,000 and were valued at around $50.9 million. Utah farms produced 25.3 million lb of sheep and lambs in 2001, and an estimated 2.65 million lb (1.2 million kg) of shorn wool in 2002. Dairy farms had around 93,000 milk cows, which produced 1.64 billion lb (0.74 billion kg) of milk.