Evaluation of homogeneity in feed by method of Microtracers

SUMMARY The mixture homogeneity is an issue of serious concern in the course of adding insignificant amount of feed components in the mixture. Several different methods for determining animal feed homogeneity are used worldwide. In this paper are shown results for mixture homogeneity obtained by the physical method with “Microtracer” (coloured iron particles), during which the process of adding components in certain mixing ratio has been simulated. Due to the fact that the particle size plays the most important role in achieving homogeneity, two groups of feed mixtures with different particles size have been examined. Study results show that the satisfactory mixture homogeneity has been attained in the mixtures with more uniform particles size, whereas it was not possible in the mixtures with less uniform particles size.