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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/1869

Title: Factor and image analysis of type traits of dairy cows
Authors: Ali, Ahmed Kamal Ahmed
Keywords: Factor and image analysis
Traits of dairy cows
Linear types
Issue Date: 1991
Publisher: King Saud University
Citation: J. of Kind Saud University, Agric. Sc.: 3(1); 29-42
Abstract: Data on sixteen linear type traits and six udder measurements were simulated for an arbitrary lactation of 10.000 unrelated cows. Factor analysis and image analysis were carried to investigate the relationship between these traits. The first four principal components accounted for 59% ofthe total variance in type traits. However, first and second principal components accounted for 64% of the total vari-ability of udder conformation traits. A principal factor analysis followed by a factor rotation was used to determine new factors. Image and anti-image covariance matrices were derived for body measurements and udder measurements. Image coefficients were computed to estimate a predicted value for any trait from n-1 other traits.
Description: Department of Animal Production, College of Agriculture, King Saud University.
URI: http://hdl.handle.net/123456789/1869
Appears in Collections:College of Foods And Agricultural Science

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