关键词: 猪; 地方品种; 肉质; 近红外; 指纹图谱; 主成分分析; 聚类分

Abstract: The aim of the present study was to investigate the feasibility of identifying the relationship between the Yunnan pig breeds in meat characteristics with near-infrared (NIR) spectroscopy. One hundred and two pork samples were from eight countries of Yunnan province in China. Based on the NIR spectra of the preprocessing pork，the samples were subjected to principal component analysis (PCA) and cluster analysis (CA). The results showed that there were the common features and some differences in NIR spectra from different Yunnan pig breeds，seven pig breeds were scattered different regions of the principal components. According to the euclidean distance of NIR spectra, the relationship of the different breeds could be identified by cluster analysis，the distance of spectra was the shortest between the samples from Dahe wu pig and Dahe pig，Diqing zang pig was special significantly in meat characteristics. So applying near-infrared fingerprint spectroscopy can accurately and quickly analysis meat characteristics of local swine breeds，and find out the special resource of swine breeds in meat.

Key words: pig; breed; pork; near-infrared; principal component analysis; cluster analysis