The Department of Livestock Development (DLD) had also launched many projects to promote dairy farming. These included the establishment, in 1957, of two artificial insemination (AI) centres: one in Huay Kaew, Chiang Mai province, and the other in Potharam district, Ratchburi province. Breeding stock from pure-bred Holstein-Friesian and Brown Swiss were used for the artificial insemination. The United States Government provided the Brown Swiss dairy sires for the project.