Geometric Morphometric Analyses on Radiographic Images of The Carpal Joint Region of English Setters

Abstract

This study aims to determine the morphological differences according to gender via radiographic images taken from the carpal bones of English setters. A total of 28 bone samples, 16 females and 12 males, were used in the study. The shape differences between males and females were evaluated by placing 27 landmarks on the X-ray images. Principal Component Analyses are used to measure the distribution of variance. In addition, these analyses take the mean shape variation and compare it to shape differences. As a result of this analysis, the value of PC1 explained 24.34% of the total variation. In addition, PC2 explained 16.24% of the total variation, and PC3 explained 10.45%. In addition, the results of PCA were also described in terms of the English setter samples used. Then, Discriminant Function analysis was performed using the same software program. With this analysis, it was tried to determine the differences between the genders. According to the discriminant function test, 13 of 16 female dogs were completely separated from male dogs. Also, all 12 male dogs were separated from female dogs according to the same test results. In short, because of this study, shape differences in the carpal bones of English setters were investigated according to gender.