Correlation and Principal Component Analysis between Body Mass and Body Measurement Traits in Mahuang Chickens

doi:10.15933/j.cnki.1004-3268.2022.05.013

Abstract

Abstract: In order to investigate the intrinsic correlation of body mass and body measurement traits in Mahuang chickens，the body mass and eight body measurement traits of 56‑day‑old roosters and 63‑day‑old hens（30 chickens per gender） were measured and analyzed by correlation analysis and principal component analysis.The results showed that the pelvis width and shank girth of roosters were significantly higher than those of hens（P<0.01），the chest angle of roosters was significantly higher than that of hens（P<0.05）.There was large degree of variation of chest width and shank length in roosters，indicating a great potential in breeding. Male body slope length was the most important factor affecting body mass，followed by keel length，and the correlation coefficients were 0.439（P<0.01）and 0.355（P<0. 05），respectively.The positive correlation between body mass and chest angle of hens was significant（P<0. 05） with the correlation coefficient of 0.325. And there were different degrees of correlation between other traits. The principal component analysis showed that the body mass and body measurement traits could be simplified to four principal components，which occupied 74.218% in roosters and 70.130% in hens of total information amount.Among the four principal components of roosters and hens，the body mass，body slope length，shank length，pelvis width，chest angle and chest girth had the highest contribution to principal components，which reflected the body shape characteristics and growth and development rules
of Mahuang chickens.In summary，the body mass，body slope length，shank length，pelvis width，chest angle and chest girth can be the candidate traits for Mahuang chicken selection and breeding.

Key words: Mahuang chicken, Body mass, Body measurement trait, Correlation analysis, Principal component analysis

摘要： 为研究麻黄鸡体质量与体尺性状的关联性，分别测定了56日龄公鸡、63日龄母鸡（公母各30只）的体质量及8个体尺指标，利用相关分析和主成分分析等方法研究麻黄鸡体质量与体尺性状之间的内在联系。结果表明，麻黄公鸡髋骨宽、胫围极显著高于母鸡（P<0.01），公鸡胸角显著高于母鸡（P<0.05），公鸡胸宽、胫长性状变异程度较大，选育潜力大。公鸡体斜长是影响体质量的最主要因子，其次是龙骨长，其相关系数分别为0.439（P<0.01）和0.355（P<0.05），母鸡体质量与胸角呈显著正相关（P<0.05），相关系数为0.325，其他性状之间存在不同程度的相关性。由主成分分析结果可知，公、母鸡的体质量与体尺性状指标都可简化为4个主成分，公、母鸡累计贡献率分别占信息总量的74.218%和70.130%；公、母鸡简化的4个主成分中，以体质量、体斜长、胫长、髋骨宽、胸角和胸围对主成分的贡献最大，反映了麻黄鸡的体型特征和生长发育规律。综上，麻黄鸡的选育信息中应包括体质量、体斜长、胫长、髋骨宽、胸角和胸围这6个指标。

关键词: 麻黄鸡, 体质量, 体尺性状, 相关分析, 主成分分析

CLC Number:

S831.2

LI Ying, HE Jingyi, CHEN Peng, ZHANG Li, XU Xinchun, JI Jian, LUO Chenglong. Correlation and Principal Component Analysis between Body Mass and Body Measurement Traits in Mahuang Chickens[J]. Journal of Henan Agricultural Sciences, 2022, 51(5): 126-132.

李莹, 何静怡, 陈鹏, 张丽, 许欣纯, 计坚, 罗成龙 . 麻黄鸡体质量与体尺性状的相关分析和主成分分析[J]. 河南农业科学, 2022, 51(5): 126-132.

Figures/Tables 4

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