Beltsville swine, two breeds of swine developed at the agricultural research center of the U.S. Department of Agriculture in Beltsville, Md. The breeds are designated Beltsville No. 1 and Beltsville No. 2. Beltsville No. 1 was developed by crossing Danish Landrace and Poland China swine. It is black in color with uniformly distributed white markings. Beltsville No. 2 was developed from crosses using Danish Yorkshire, Duroc, Landrace, and Hampshire breeds. Its color is solid red with a white underline and occasional black spotting; its length is about the same as that of a Yorkshire.
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