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Updated: Aug 19, 2026

Milk Collection in the Rat Using Capillary Tubes and Estimation of Milk Fat Content by Creamatocrit
Published on: December 16, 2015
Associations among individual proteins and fatty acids in bovine milk as determined by correlations and factor
G Bobe1, D C Beitz, A E Freeman
1Nutritional Physiology and Animal Breeding Groups, Department of Animal Science, Iowa State University, Ames 50011-3150, USA.
Abstract:
Associations among quantities and concentrations of individual milk proteins and fatty acids were determined in individual milk samples from 233 Holstein cows. Correlation coefficients among the six major proteins and the eleven major fatty acids in bovine milk were grouped hierarchically. Factor analyses grouped the milk components into seven families: fatty acids 4:0-6:0, 6:0-16:0, 16:0, 18:0, 16:1 plus 18:1 plus 18:2, all milk proteins and beta-lactoglobulin alone. Correlation coefficients and groupings by factor analyses coincided with shared pathways of synthesis or genetic origins of milk proteins and fatty acids because they are the basis of the correlation coefficients. Hence, the results from correlations and factor analyses could be used to develop hypotheses for the synthesis of milk components and other coordinately regulated physiological processes.
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