Resizing the productive characteristics of meat-type quail through principal component analysis

ABSTRACT This study aimed to establish criteria for eliminating redundant variables, to know the magnitude of the data relationship, and to provide information that helps researchers in the use of the technique to analyze and interpret production data and egg quality. The data used in this work was obtained from four successive generations of the quail lineage developed by the Department of Animal Science of the Federal University of Pelotas. The characteristics were measured from the 42nd day of age, when the egg production period began, until 126 days of production, obtaining three 28 day periods (cycles) in the four successive generations, totaling 545 females. Of the twelve original variables, only seven demonstrated potential to be maintained in future experiments, representing a 42% exclusion. The main philosophy of this study was the analysis of the studied variables and made possible the understanding of the relationship and the correlations.

摘要 本研究旨在建立冗余变量剔除标准，明确数据关联强度，为研究人员运用相关技术分析、解读生产数据与蛋品质数据提供参考依据。本研究所用数据取自巴西佩洛塔斯联邦大学（Federal University of Pelotas）动物科学系培育的鹌鹑品系连续四代群体。试验观测始于鹌鹑产蛋期起始的42日龄，直至累计产蛋时长达126天，在此连续四代群体中共设置三个28天的观测周期，最终共计纳入545只母鹌鹑。原始变量共计12项，其中仅7项具备保留至后续试验的潜力，变量剔除比例达42%。本研究的核心思路为对所考察变量开展分析，以此明晰变量间的关联与相关关系。