青脚麻鸡腿骨发育规律的观察

Observation of Development Regularity of Leg Bone in Cyan-shank Partridge Chickens

400只青脚麻鸡分别于21、28、35、42、49、56日龄随机抽取样鸡8只（公、母各半）称重,分离股骨和胫骨,称重并测量长度,分析骨指数、相对生长和累积生长,观察青脚麻鸡3~8周龄腿骨的发育规律。结果表明：公、母鸡股骨的绝对长度生长峰期出现落后于绝对增重,即49日龄对42日龄,而公、母鸡的胫骨绝对长度生长峰期出现先于绝对增重。截至56日龄,公、母鸡的股骨和胫骨长度没有差异,而公鸡的股骨和胫骨重均大于母鸡,与股骨比较,公、母鸡的胫骨均在早期生长较快,胫骨指数大于股骨指数。不同性别的股骨和胫骨重均与其日龄的增加呈高度正相关。

400 Cyan - Shank Partridge Chickens were used for this experiment, Eight Chickens （female and male were half to half） were selected and weighed in 21,28,35,42,49,56 days at random. Then separated the femur and tibia, weighed and measured its length, analysed bone index, relative growth and cumulative growth in order to observe the development regularity of leg bone in Cyan - Shank Partridge Chicken at 3 to 8 Weeks. The results showed that the growing peak of absolute length in femur were later than the absolute weight gain both for the male and female（49 vs 42 days old）, while the growing peak of absolute length were earlier than the ab- solute weight gain in tibia. Till the 56th day, the length of femur and tibia had no difference in male and femal, but the weight of femur and tibia in cock were both heavier than that in hen. Compared with the femur, the tibia grew faster in the early both for the male and female and the tibia index was higher than the femur index. The weight of femur and tibia in different gender have a highly positive correlation with the increasing days.