查吾拉牦牛体质量与体尺相关性分析

Correlation Analysis Between Body Weight and Body Size of Chawula Yak

保吉财 ¹翁浩博 ²张品林 ¹祁发生 ¹珠姆 ¹李明 ¹喇振兴 ¹旦增顿旦 ¹次仁郎杰 ¹次旦多吉 ¹其米卓嘎 ¹张勇¹

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作者信息

1. 西藏自治区那曲市农牧业(草业)科技研究推广中心,西藏那曲 852000
2. 西藏自治区那曲市农业农村局,西藏那曲 852000
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摘要

为了探究查吾拉牦牛体质量与体尺指标之间的相关性,利用SPSS 23.0数据统计分析软件对37头成年查吾拉牦牛体质量与体尺数据进行描述性统计、相关性分析和多元线性逐步回归分析.结果显示,查吾拉牦牛体质量变异系数最大(22.25％),体质量与7项体尺指标均存在相关性,其中体质量与体高、体直长、体斜长、胸围、背高、腰高之间相关性达到极显著水平(p＜0.01),体质量与管围之间相关性达到显著水平(P＜0.05),得出最优回归方程为:Y=-485.969+1.996X4+1.765X3+1.397X1(R2=0.879,p＜0.01)..

Abstract

To explore the correlation between body weight and body size indicators of Chawula yak.SPSS 23.0 data statistical analysis software was used to conduct descriptive statistics,correlation analysis and multiple linear stepwise regression analysis on the weight and body size data of 37 adult Chawula yaks.The body weight of Chawula yak has the largest coefficient of variation(22.25％),and has correlations with other seven body size indi-cators.The correlation between body weight and body height,body straight length,body oblique length,chest circumference,back height,waist height reached an extremely significant level(p＜0.01),while the correlation between body weight and tube circumference reached a significant level(P＜0.05).The optimal regression equation was weight=-485.969+1.996 chest circumference+1.765 body obliquely long+1.397 body height(R2=0.879,p＜0.01).

关键词

查吾拉牦牛/体质量与体尺/逐步回归分析

Key words

Chawula yak/body weight and body size/stepwise regression analysis

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出版年

2024

西藏农业科技

西藏自治区农牧科学院农研所

西藏农业科技

影响因子：0.183

ISSN：1005-2925

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