The labeling of products containing GMOs above 0.9% results from the provisions of the law in force in the European Union. The aim of the study was to evaluate the presence of genetically modified rape in feed used in feeding farm animals in Poland. The research was based on the real-time PCR technique, using primers and event-specific probes. A total of 900 samples were analyzed. The research identified canola line GT73, resistant to glyphosate. Only in 12 samples did the content of this oilseed rape exceed the threshold above which the product must be labeled as containing GMOs. Conducting such controls is extremely important because of the possibility of contamination of feed free from genetically modified organisms, which are increasingly used in animal nutrition.