Influence of Concentrate Feeding Frequency and Intrinsic Factors on Diurnal Variations of Blood Metabolites in Dairy Cows

Abstract

The purpose of this study was to determine the influence of the concentrate feeding frequency and some intrinsic factors on the diurnal variations of the blood metabolites glucose, β-hydroxybutyrate, urea nitrogen, non-esterified fatty acids, cholesterol and total protein in two herds with different concentrate feeding frequencies. These informations should yield knowledge for a better standardization of the sampling procedure when biochemical analyzes are to be used as diagnostic aids.