关键词: 二郎山山地鸡, 群体, 赖氨酸, 外貌, 体重

Abstract: [Objective] To determine the best content of dietary lysine for Erlang Mountainous chickens and obtain their ideal market appearances and body weights.[Method] We collected the weight,crown,crown color,plumage color and shank color of two generations and originated from lines SD02,SD03 and their reciprocal crosses under the high and low lysine level at 70-day old chickens.[Results] The study indicated that the titian was the dominant color in secondary, demoiselle and dorsal feather besides the neck feather was pied.The proportions of individuals with titian color at demoiselle feather in line SD0302 and at dorsal feather in line SD02were higher than those in other lines,respectively.The number of chickens with titian feather under high lysine groups were significantly higher than low lysine groups.The chicken weights under high lysine group were significant heavier than those of low lysine group (P<0.05).[Conclusion] The study indicated that the feather color of SD0302 and SD02chickens were better than those of SD0203 and SD03,and the feather color and body weight of high lysine groups were significantly better than low lysine groups.These results provide basis for further breeding and nutritional needs of dietary lysine in Erlang Mountainous chickens.

Key words: Erlang Mountainous chicken, genetic population, lysine, appearance, body weight