KMID : 0359320130530010007


Korean Journal of Veterinary Research 2013 Volume.53 No. 1 p.7 ~ p.10


Application of varimax rotated principal component analysis in quantifying some zoometrical traits of a relict cow


ParesCasanova Pere M.
Sinfreu I Villalba D


Abstract



A study was conducted to determine the interdependence among the conformation traits of 28 ¡°Pallaresa¡± cows using principal component analysis. Originally 21 body linear measurements were obtained, from which eight traits are subsequently eliminated. From the principal components analysis, with raw varimax rotation of the transformation matrix, two principal components were extracted, which accounted for 65.8% of the total variance. The first principal component alone explained 51.6% of the variation, and tended to describe general size, while the second principal component had its loadings for backsternal diameter. The two extracted principal components, which are traits related to dorsal heights and backsternal diameter, could be considered in selection programs.


KEYWORD


Blanca del Pallars, correlation, morphometry, multivariate analysis, Pallaresa


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