Dingyuan Black Pig is one of 3 1 excellent local pig breeds in China, and it is also the largest, most widely distributed and most influential local pig breed in Anhui Province at present. It has excellent characteristics such as strong adaptability, high reproduction rate, high lean meat rate and delicious meat quality. In history, the bridge tail pickled with Dingyuan pig participated in Panama Expo and was highly praised by international friends. Since 1987 was listed as the national commercial lean pig production base county, Dingyuan county has used Dingyuan pig resources, introduced improved varieties, and vigorously promoted the production of "ternary" hybrid pigs, which has accelerated the development of pig production in the county and become a pillar industry of aquaculture.