摘要
对55 日龄期内贵州黄快慢羽鸡的体重增长以及主翼羽、覆主翼羽和尾羽的生长变化进行了对照观测分析。表明:快慢羽鸡之间在这些性状的早龄发育上均各有其特点。对生长雏鸡的快慢羽的鉴别,在7 日龄前可继续按主翼羽和覆主翼羽的相对差度进行。7 日龄后,除部分慢羽鸡可继续按主翼羽和覆主翼羽的相对差度识别外,主要可依据尾羽的差异对快慢羽鸡进行区分。综合应用这两方面的信息可将可鉴龄期持续至1 月龄左右。
The growth of body weight and the changes of primary flight feather,secondery flight feather and tail feather for rapid and slow feathering Guizhou Brown Fowl with day age in the period from 1st to 55th day age was studied by the way of comparison.The results indicated that the chicks of rapid and slow feathering was both itself developing peculiarity for early growths of the characters, and identification about feathering types of the growth chicks went on the relative lengths of the primary flight feather and secondery flight feather before 7th day age.And after 7th day age,in addition to a part of slow feathering chicks continued on the relative length,major identification method is judging by the difference of tail feathers between the rapid feathering and slow feathering chicks.Applying synthetically information from the both (ie:from relative lengths of the primary flight feather and secondery flight feather and from the differences of tail feathers) ,identifiable stage of age will continue above 1 mouth age.
出处
《贵州农业科学》
CAS
1999年第5期9-13,共5页
Guizhou Agricultural Sciences
关键词
贵州黄鸡
生长雏鸡
快慢羽鉴别
鸡
遗传性状
Guizhou brown fowl
growth chicks
identification for feathering type
