TO SEARCH REASONS FOR SENSITIZATION OF CATTLE TO PPD-TUBERCULIN FOR MAMMALS
The work was carried out in order to establish a connection between the manifestation of nonspecific allergic reactions to tuberculin and the identification of cows with actinomycosis. The study was carried out in 7 tuberculosis-free farms, on 3473 head s of cattle. The results of studies with a high degree of reliability (P <005) indicated that there was no relationship between the manifestation of nonspecific reactions to tuberculin with the detection of actinomycotic lesions in those who react and do not react to the intradermal administration of PPD-tuberculin for mammals.