Correlation and Path Analysis of Morphological Traits to Body Weight of Pteria Penguin from Meiji Reef

In order to explore the relationship between morphological traits and body weight of Pteria penguin from the Meiji Reef, it was expected to provide technical support for the breeding of excellent traits. Pteria penguin from Meiji Reef was randomly selected, their body weight (Y) and 10 (X1-X10) morphological traits were obtained through measurement, and the study was carried out around the mutual influence of their morphological traits to body weight. The results showed that there was a positive correlation between the body weight of Pteria penguin and various morphological traits, and the correlation coefficients reached a very significant level (P<0.01). Path analysis found that the length from top to back ear base (X8) had the greatest direct effect on body weight (0.576), followed by shell height, shell width. Coefficient of determination analysis showed that the sum of the co-determination coefficients of these three traits to body weight was 0.811, which further indicated that body weight was mainly affected by the above traits. After multiple regression analysis, the regression equation of Pteria penguin morphology and body weight was established, and the best fitting curve model was screened out. In actual production operations, when breeding Pteria penguin with body weight as the target parent, the length from top to back ear base (X8) should be used as the main trait reference, and the shell height (X2) and shell width (X3) should be used as the auxiliary trait reference.