EncyclopediaDuroc swine
Duroc swine (dŭ'rok, dOO'–) [key], breed originating during the 1800s in the NE United States from crosses among a number of red strains existing in that region. One of the most numerous breeds, they are large, rugged, solid-red animals, noted for hardiness and prolificacy.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.
More on Duroc swine from Infoplease: