[Experimental studies on allergenic effect of Mycobacterium intracellulare in cattle]

Mycobacterium intracellulare, isolated from sawdust used as litter, was inoculated into 25 bullocks. Six developed a doubtful reaction to mammalian tuberculin and the remainder stayed negative. With avian tuberculin, 8 became positive, 10 doubtful and 7 remained negative. Using the interpretation key described by Goetze, Lauterbach and Nassal, the reactions were shown to be para-allergic. At slaughter there was no evidence of tuberculous lesions.