Mycobacteria isolated from nasal secretions of tuberculin test reactor cattle.
Nasal secretions of 103 Holstein cows from a tuberculosis-infected herd in Argentina were bacteriologically cultured for mycobacteria. Mycobacterium bovis was isolated in 8.7% of the cultures. This method was useful for the detection of active tuberculosis with open lesions. Other mycobacteria, most of which grew rapidly on culture media, were isolated in 32% of the cultures and were of little importance as sensitizing agents to mammalian tuberculin in experimental studies in guinea pigs.
D000818:Animals; D002417:Cattle; D005260:Female; D009161:Mycobacterium / Q000302:isolation & purification*; D009163:Mycobacterium bovis / Q000302:isolation & purification; D009297:Nasal Mucosa / Q000378:metabolism / Q000382:microbiology*; D009170:Nontuberculous Mycobacteria / Q000302:isolation & purification; D014374:Tuberculin Test / Q000662:veterinary*; D014380:Tuberculosis, Bovine / Q000382:microbiology*