Conveying and mixing tests on feed mixing plants
Carry-over control and/or verification of mixing
accuracy Good mixing accuracy and uniform distribution of the individual components are essential for producing high-quality feed. Similarly, the carry-over of additives to non-target animal species can have far-reaching consequences. Therefore, feed mixing plants should be regularly inspected for these two parameters to prevent deviations in the composition of the feed and, ultimately, any adverse effects on animal performance.
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As part of the mixing plant inspection, mixing accuracy and the homogeneous distribution of the individual feed components are determined. As part of the carry-over test, we check what quantities of a feed component can still be found in subsequently mixed feed after a certain number of rinse cycles. For both tests, a specific amount of Microtracer (coloured iron particles) is added to the mixing systems. The number of remaining particles in the product is then counted.
Our experienced and independent feed experts work with you to define the test batches, the mixing duration, the points of introduction for the Microtracer and the sampling points. Samples are taken at various points during the mixing process or after a defined number of rinse batches. This is documented in a detailed sampling report. Following evaluation of the samples using the rotational detector method and statistical analysis, we prepare the test report.
The following areas, amongst others, can be covered by us as part of a carry-over and mixing test for animal feed:
- Checking the carry-over of feed components after a specific number of rinse cycles
- Checking the homogeneity of mixing plants for feed production to ensure consistent quality and the thorough mixing of individual components
- Evaluation of homogeneity or carry-over using the rotary detector method and statistical analysis
- Issuing of a sampling protocol and a test report
Last updated: 15.06.2026
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