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No.32 (1985/12) >

 
Title :トカラ馬の体型に関する主成分分析(畜産学科)
Title alternative :Principal component analysis of body size and shape in Tokara horses (Department of Animal Science)
Authors :新城, 明久
笹沼, 清孝
Authors alternative :Shinjo, Akihisa
Sasanuma, Kiyotaka
Issue Date :2-Dec-1985
Abstract :トカラ馬について, 宝島集団23頭, 開聞集団38頭及び入来集団15頭の体型の変化を, 体高, 胸囲等12部位の体尺測定値に基づき, 多変量解析(主成分分析)を用いて類型化した。大きさ因子である第1主成分において, 入来集団は他の2集団から, 大きく隔たっていた。形因子である第2,第3主成分において, 入来集団と開聞集団雄, 宝島集団と開聞集団雌とは分離した。これらのことから, 最近のトカラ馬の体型は, 体が大きく, 体長が短く, 肋張りの良い形を示す傾向にあることが示唆された。
Tokara horses had been bred in Tokara islands. The twelve body parts of 5 stallions and 18 mares in Takara island were measured by Hayashida (1953), and those of 17 stallions and 21 mares at Natural Park in the foot of Mt. Kaimon, and 9 stallions and 6 mares at Iriki Livestock Farm of Kagoshima University were measured by Yanagida et al. (1981,1982). In this work, changes in the body size and shape of three populations in those horses were characterized by a multivariate analysis with a principal component analysis. The first principal component with the size factor contributed to the isolation of Iriki population from other two populations. The second and third principal component with the shape factor contributed to the isolation of Iriki population and the stallions of Kaimon population from the population in Takara island and the mares of Kaimon population. In this analysis, it was suggested that Tokara horses were acquiring biger sizes, shorter body lengthes and broader ribs.
Type Local :紀要論文
ISSN :0370-4246
Publisher :琉球大学農学部
URI :http://hdl.handle.net/20.500.12000/3943
Citation :琉球大学農学部学術報告 = The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus no.32 p.99 -102
Appears in Collections:No.32 (1985/12)

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