Fowl Tuberculosis 391 



FOWL TUBERCULOSIS. 

 BACILLUS TUBERCULOSIS AVIUM. 



The occasional spontaneous occurrence of tuberculosis in 

 chickens, parrots, ducks, and other birds, observed as early 

 as 1868 by Roloff* and Paulicki,f was originally attributed 

 to Bacillus tuberculosis hominis, but the work of Rivolta,J 

 Mafucci, Cadio, Gilbert and Roger, || and others has shown 



Fig. 113. Bacillus tuberculosis avium. 



that, while similar to it in many respects, the organism 

 found in the avian diseases has distinct peculiarities which 

 make it a different variety, if not a separate species. Cadio, 

 Gilbert, and Roger succeeded in infecting fowls by feeding 

 them upon food containing tubercle bacilli, and keeping 

 them in cages in which dust containing tubercle bacilli was 

 placed. The infection was aided by lowering the tempera- 

 ture of the birds with antipyrin and lessening their vitality 

 by starvation. 



* " Mag. f. d, ges. Tierheilkunde," 1868. 

 f'Beitr. zur vergl. Anat.," Berlin, 1872. 

 J "Giorn. anat. fisiol. e path.," Pisa, 1883 

 "Zeitschrift fur Hygiene," Bd. xi. 

 II "La Semaine medicate," 1890, p. 45. 



