. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. 690 Tuberculosis fowl tuberculosis Bacillus Txjberculosis Avium The occasional spontaneous occurrence of tuberculosis in chickens, parrots, ducks, and other birds, observed as early as 1868 by Roloff* and Paulicki,t was originally attributed to Bacillus tuberculosis hominis, but the work of Rivolta,t Mafucci,§ Cadio, Gilbert and Roger, 11 and others has shown that, while similar to it in many respects, the organism found in the avian diseases has distinc
. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. 690 Tuberculosis fowl tuberculosis Bacillus Txjberculosis Avium The occasional spontaneous occurrence of tuberculosis in chickens, parrots, ducks, and other birds, observed as early as 1868 by Roloff* and Paulicki,t was originally attributed to Bacillus tuberculosis hominis, but the work of Rivolta,t Mafucci,§ Cadio, Gilbert and Roger, 11 and others has shown that, while similar to it in many respects, the organism found in the avian diseases has distinct pe- culiarities 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. Fig. 280.—Bacillus tuberculosis avium. infection was aided by lowering the temperature of the birds with antipyrin and lessening their vitality by starvation. Morphologic Peculiarities.—Morphologically, the organism found in avian tuberculosis is similar to that found in the mammalian disease, but is a little longer and more slender, with more marked tendency to club and branched forms. Fragmented and beaded forms occur as in the human tubercle bacilli. Staining.—The avian bacillus stains in about the same manner as the human and bovine bacilli and has an equal resistance to the decolorant effect of acids. Cultivation.—Marked rapidity and luxuriance of growth are * "Mag. f. d. ges Tierheilkunde," 1868. t "Beitr. zur vergl. Anat.," Berlin, 1872. t "Giorn. anat. fisiol. e. path.," Pisa, 1883. § "Zeitschrift fur Hygiene," Bd. xi. II "La Semaine medicale," 1890, p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perf
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