Correlation and Principal Component Analysis of Body Weight and Body Size Traits in Turpan Black Sheep

DOI

10.2991/978-94-6463-910-0_13How to use a DOI?

Keywords

Turpan Black Sheep; Body Weight and Size; Correlation Analysis; Principal Component Analysis; Regression Analysis

Abstract

This study aims to investigate the growth patterns between body weight, body height, oblique body length, and other body size traits in Turpan Black Sheep. A total of 849 production performance records from female Turpan Black Sheep aged over 12 months were collected, encompassing body weight and eight body size traits, followed by statistical analysis on these traits. Descriptive statistics showed that the overall coefficient of variation for body size traits in Turpan Black Sheep was within a normal range, with body weight and tail width having the highest coefficients of variation at 20.05% and 14.86%, respectively. There was a highly significant positive correlation (P<0.01) between body weight and all eight body size traits, with the highest correlation being with chest circumference (r=0.785). Principal component analysis extracted three principal components (cumulative contribution rate of 69.735%): PC1 (44.193%) reflected body weight and trunk development; PC2 (15.222%) highlighted fat-tail characteristics; PC3 (10.320%) characterized skeletal structure. The prediction accuracy (R²=0.759) of the principal component regression model (Y=7.568PC₁-1.462PC₂+44.06) was significantly higher than that of the body size trait model (R²=0.734). Using principal component factors can better elucidate the intrinsic relationships between body weight and various traits in Turpan Black Sheep, providing references for breeding selection and optimizing breeding efficiency.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Wenhui Yu
AU  - Yanhua Zhang
PY  - 2025
DA  - 2025/12/15
TI  - Correlation and Principal Component Analysis of Body Weight and Body Size Traits in Turpan Black Sheep
BT  - Proceedings of the 2025 2nd International Symposium on Agricultural Engineering and Biology (ISAEB 2025)
PB  - Atlantis Press
SP  - 118
EP  - 131
SN  - 2468-5747
UR  - https://doi.org/10.2991/978-94-6463-910-0_13
DO  - 10.2991/978-94-6463-910-0_13
ID  - Yu2025
ER  -