Poultry production systems have been in existence for a long time. According to archaeological evidence, poultry production in Viet Nam began 3 000–3 500 years ago in the valley of TamDao and BaVi mountain areas (currently belonging to VinhPhuc and Hanoi Provinces). Poultry is raised and well developed in all regions of the country, mainly in Red River Delta (RRD) with 26 percent, followed by Mekong River Delta (MRD) with 20 percent, the northeast with 16 percent and Northeast South with 10 percent. These four regions account for 72 percent of the country’s poultry population (Statistical Yearbook of Viet Nam,.
