Fan duck is mainly produced in Yangxin County, Hubei Province, Fuzhou suburbs and Longhai and other places, distributed in Fuqing, Putian, Jinjiang, Changtai, Longyan, Datian, Pucheng and other cities and counties, in Jiangsu, Zhejiang, Shanghai and Anhui Province, part of the region also has production areas.
In the same feeding management conditions, male and female duck growth rate is very different. After the chick out of the shell, feeding to 10 days of age, from the size, the size of the body weight can be distinguished from male and female. The absolute maximum increase in average body weight is after 70 days of age. 70 days of age after the male duck weight growth greatly exceeds that of the female duck. 160 days of age, male ducks than female ducks weigh about 1.10 kilograms.