EN
The aim of this paper is to present the results of comparative evaluation of the usefulness of PCR and microscopic methods in the detection of processed animal protein in feedingstuffs. Out of 127 samples of feedingstuffs examined by microscopic method 82 (64.57%) were found to be positive. In comparing the results obtained by microscopic examination and PCR technique, it was found that both methods agreed in 67.7% giving 44 positive and 42 negative results. The rest results (32.3%) were not coincident. In the validation study, the limit of the detection for PCR was determined on 0.2% for beef and pork meat and bone meal (MBM) and 0.1% for poultry MBM. Analysing results received with the help of the microscopic method and PCR technique it is possible to state that the molecular biology methods can at present, be used as a supplementary method.