Studies on the Breeding of Chongren Brown(black)-spotted Chickens
Li Fangquan Xie Jinfang Zhang Yuankui (Animal Husbandry and Veterinary Institute, Jiangxi Academy of Agricultural Sciences) Huang Hu Ding Jincai (Chongren Animal Breeding Farm, Jiangxi)
Starting from 1984, a closed family strain breeding method for the Chongren Brown-spotted Chickens was used in two generations. The appearance features and body conformation of the adult chicken are almost the same, and possess the original characteristics of small sized, early maturity, high egg yield with better meat quality, high rate of feed convertions and stronger adaptation. Within 5 years, 3.8 million birds of Chongren Brown-spotted Chickens have been extended to the whole country. The economic efficiency is very high. The bred chickens have a stable genetic performance. It's major economic traits have been improved, obviously. The amount of egg production in 300 days averages 71.74 and in 500 days 180.23, which gains an increase of 14.6% and 13.7% respectively in comparison with the original flock and also an increase of 4.6% and 5.8% respectively as compared to the zero generation. In teh meantime, other traits, were also estimated for the genetic parameters, and the future breeding direction and methods discussed.