黄杂鸡体重和体尺性状的测定与相关分析

Measurement and Correlation Analysis of Weight and Body Size in Yellow Miscellaneous Chicken

本试验对90日龄黄杂鸡的体重和体尺进行了测定,并对所测指标进行了相关性分析。结果显示:公鸡的体重、胸深、胸宽、胸骨长、胫长、胫围和背宽均极显著大于母鸡(P<0.01),各体尺之间均呈极显著正相关(P<0.01);在所有相关系数中,体重与胸宽的相关系数最大(r=0.809),胸深与胫围的相关系数最小(r=0.363)。本试验表明在肉用黄杂鸡的选种上,可以加强胸宽等指标的选育,提高肉用鸡体重。

The body weight and body size of the 90-days-old yellow miscellaneous chicken were mea- sured and analyzed to study the relatioships of each trait. The results showed that the weight, chest depth, chest width, sternum length, tibial length, tibial circumference and back width of cocks were significantly higher than those of hens （P〈0.01）, and there was significant positive correlation among these traits （P〈0.01）. In all the correlation coefficients, the correlation coefficient of body weight and chest width was the largest （r= 0.809）, the correlation coefficient of chest depth and tibial circumference was the smallest （r=0.363）. This experiment indicated that chest width could as a breeding index to improve the chicken＇s weight.