无量山乌骨鸡体重和体尺测定及相关性分析

目的 研究不同性别无量山乌骨鸡体重、屠体重和体尺的相关性。方法 以18周龄无量山乌骨鸡为研究对象,测定公母各30只鸡体重、屠体重以及体斜长、龙骨长、胫长、胫围、髋宽、胸宽和胸深,应用独立样本t检验进行比较,采用Pearson分析法进行相关性分析。结果 无量山乌骨鸡公鸡体重、屠体重、体斜长、龙骨长、胫长、胫围、髋宽、胸宽和胸深极显著（P<0.01）高于母鸡。公鸡体重与屠体重、龙骨长和胫围极显著（P<0.01）正相关。母鸡体重与屠体重极显著（P<0.01）正相关,与胫围显著（P<0.05）正相关。结论 公鸡体重和体尺显著高于母鸡;体重与屠体重和胫围显著正相关;骨骼发育相关的龙骨长、胫长和胫围等体尺指标存在相关性。

Determination and Correlation Analysis of Body Weight and Measurement of Wuliangshan Sooty Chicken

Objective] To investigate the correlation of body weight, carcass weight, and body measurement of Wuliangshan sooty chicken of different genders. Method] A total of 60 18-week-old Wuliangshan sooty chickens with half males and half females were chosen, and their body weight, carcass weight, body oblique length, keel length, tibia length, tibia circumference, hip width, chest width, and chest depth were measured. An independent sample t-test was used for statistical comparison. For correlation analysis, Pearson analysis was employed. Result] The males had extremely significantly （P<0.01） higher body weight, carcass weight, body oblique length, keel length, tibia length, tibia circumference, hip width, chest width, and chest depth than those of the females. Extremely significantly （P<0.01） positive correlations between body weight and carcass weight, keel length, tibial circumference were found in the males. The females′ body weight had extremely significantly （P<0.01） and significantly （P<0.05） positive correlation with carcass weight and tibial circumference, respectively. Conclusion] The male Wuliangshan sooty chicken had much higher body weight and measurement than the female ones. Body weight was positively correlated to carcass weight and tibial circumference. Selected body measurement associated with bone development, such as keel length, tibial length and tibial circumference, had certain correlation.