Abstract: [Objective]To assess the correlation between slaughter performance and body size traits of white feather king pigeon, and to provide referential data for scientific and systemic rearing of white feather king pigeon in Guizhou area. [Method]The indicators of body size and slaughter performance of 30-day-old white feather king pigeons were determined, and significance test and correlation analysis of the tested indicators were carried out. [Result] At the age of 30 days, the white feather king pigeons had a relatively higher dressing rate （87.200%）, and their average live weight, eviscerated weight and eviscerated rate were （429.960±51.781） g, (319.253±40.342) g and 74.610%, respectively, indicating a good meat performance. The correlation analysis demonstrated that shank length, live weight and slaughter weight had significant （P<0.05） correlation with body oblique length, and wing weight had extremely significant （P<0.01） correlation with body oblique length; keel length was extremely significantly （P<0.01） positively correlated with chest depth, chest width, eviscerated weight and chest muscle weight; chest depth was extremely significantly （P<0.01） positively correlated with chest width, extremely significantly （P<0.01） negatively correlated with shank girth, and significantly （P<0.05） positively correlated with live weight, slaughter weight, chest muscle weight and leg muscle weight; slaughter weight, eviscerated weight, chest muscle weight, leg muscle weight, head weight and wing weight were extremely significantly （P<0.01） positively correlated with live weight; eviscerated weight, chest muscle weight, leg muscle weight, head weight and wing weight were extremely significantly （P<0.01） positively correlated with slaughter weight. A multivariate regression equation between slaughter performance and body size traits of white feather king pigeon was established. In addition, the regression models for live weight, slaughter weight, eviscerated weight ,chest muscle weight and leg muscle weight with body oblique length, keel length, shank length and shank girth were established, respectively, and the model fitting degree reached significant or extremely significant levels by F test. [Conclusion] The results obtained in this study provides scientific data for the future researches of white feather king pigeon.

Key words: white feather king pigeon, body size traits, slaughter performance, regression analysis