关键词: 地方鹅品种, 主成分分析, 聚类分析, 生态特征

Abstract: 【Objective】 This study was conducted to reveal the relationships among body size, reproductive traits and ecological characteristics on Chinese indigenous goose breeds. 【Method】 The date of four characteristics (i.e. body size, body weight, reproductive traits and ecological characteristics) from 30 Chinese indigenous goose breeds were collected as the principal components and analyzed by PCA method and cluster analysis. 【Result】 The results showed that 80.504% of the original variables information was reflected by the 4 principal components. The first principal component reflected the latitude, frost-free period, annual average temperature, the birth weight and annual egg production. The second component integrated the information of semi-submersible length, pelvic width, keel length and annual mean precipitation. The third component reflected the body length, chest width, adult weight and average egg weight. The fourth reflected the variations of altitude, annual sunshine duration and chest depth. Then the 30 Chinese indigenous goose breeds were divided into 4 categories according to the PCA and cluster analysis. The first category is the large goose species naturally adapted to the hot in southern China such as Lion-headed goose. The second category is the small goose species which resist the cold in northern China such as Huoyan goose. The third category is the ones lived in the subtropical monsoon climate at south of the Yangtze river. The fourth is small and medium-sized goose species adapted to temperate climate such as Youjiang goose. 【Conclusion】 The ecological characteristics were indispensable for the formation of goose growth characteristics, such as body size and reproductive performance. This study provides the theoretical foundation for the protection and utilization of genetic resources of Chinese indigenous goose breeds.

Key words: indigenous goose breed, principal component analysis, cluster analysis, ecological characteristics