CAJ | 학술논문

[目的]为了找到适合新疆褐牛体重预测的方法。[方法]运用主成分回归分析法构建了新疆褐牛公牛体重模型,消除了常用估重方法中体尺指标间普遍存在的多重共线性模型。[结果]表明,该模型具有较高的精度（R^2=0.810,P〈0.01）,估测体重与实测体重具有较高的拟合度（R=0.922,P〈0.01）。[结论]这种方法适合新疆褐牛的体型结构特点,同时,该方法与模型的应用也为其他品种牛体重估测模型的构建提供了参考。
[목적]위료조도괄합신강갈우체중예측적방법。[방법]운용주성분회귀분석법구건료신강갈우공우체중모형,소제료상용고중방법중체척지표간보편존재적다중공선성모형。[결과]표명,해모형구유교고적정도（R^2=0.810,P〈0.01）,고측체중여실측체중구유교고적의합도（R=0.922,P〈0.01）。[결론]저충방법괄합신강갈우적체형결구특점,동시,해방법여모형적응용야위기타품충우체중고측모형적구건제공료삼고。
【Objective】In order to find the suitable prediction method of body weight of Xinjiang Brown cattle.【Method】regression method of principal components analysis was used to construct the weight model of Xinjiang brown cattle,eliminate the weight model estimation methods between body measurements of common multi-colinearity.【Result】The examination proved that this model was high precision,the estimated body weight and actual body weight was high fitting.【Conclusion】 This method fit Xinjiang brown cow＇s body feature,simultaneously,this method and the application of this model were also fit for body weight estimation of other breeds,which would provided the reference for the model construction.