摘要
测定隐性白羽鸡0～12周龄体重、体尺发育规律,结果显示:①公、母鸡间体重、体尺差别明显,尤其在生长高峰以后;②体重的遗传力较高(0.36～0.57),且在生长高峰前逐渐升高、生长高峰后逐渐降低;③除个别周龄外,体尺性状的遗传力以中等为主;④12周龄性别间胫色差异不显著;⑤龙骨长、公鸡胫长在8周龄前几乎是直线生长,胸宽、母鸡胫长在6周龄前直线生长,胫围、胸角度在4周龄前生长较快,此后生长发育趋缓。
Development rule of recessive white chicken in 0-12 weeks age were studied in this paper. The results showed that there was significant difference in body weight and size between hen and rooster, especially after the growth peak. Hefitability of body weight was high （0.36-0.57）,and increased before growth peak and decreased after growth peak. Heritability of body size was middle except in exceptional week age. Difference of shank color was not significant between sexes. The growth of tibia and keel was almost linear before 8 weeks age. Width of breast,tibia length grew linearly before 6 weeks age,shank circumference and breast angle grew rapidly before 4 weeks age,then the growth and development began to slow down.
出处
《中国家禽》
北大核心
2006年第23期20-22,共3页
China Poultry
关键词
隐性白羽鸡
体重
体尺
发育规律
recessive white chicken
body weight
body size
development rule
