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Application of varimax rotated principal component analysis in quantifying some zoometrical traits of a relict cow
2013
Pares-Casanova, P.M., Universitat de Lleida, 25198 Lleida, Spain | Sinfreu, I., Universitat de Lleida, 25198 Lleida, Spain | Villalba, D., Universitat de Lleida, 25198 Lleida, Spain
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 back-sternal diameter. The two extracted principal components, which are traits related to dorsal heights and back-sternal diameter, could be considered in selection programs.
Mostrar más [+] Menos [-]Ultrasonographic tissue characterization of equine superficial digital flexor tendons by means of gray level statistics
2000
Schie, H.T.M. van | Bakker, E.M. | Jonker, A.M. | Weeren, P.R. van
Aspects of the ecology of the Asian tapeworm, Bothriocephalus acheilognathi Yamaguti, 1934 in yellowfish in the Vaal Dam, South Africa
Bertasso, A. | Avenant-Oldewage, A.(Johannnesburg Univ., Auckland Park (South Africa). Dept. of Zoology)
Резервы снижения себестоимости продукции свиноводства
2009
Bekish, E.I. | Bekish, R.V. | Kocherov, A.A., Vitebsk State Academy of Veterinary Medicine (Belarus)
The analysis of swine farming production in CHUP Zopak-Agro has shown, that the decrease in the expense of forages and expenses on a payment on made production and increase of productive and breeding qualities of animals by purposeful selective-breeding work promote decrease in the cost price of a gain of live weight of pigs at the enterprise by 55,7 thousand rbl./с (or on 15,3%)
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