220 



Manual of Veterinary Microbiology. 



Diferential diagnosis of rougct, pneumo-enteritis, and 

 swine-plague (peste-porcine.)^ 



ROUGET. 



Course rapid: 2 to 5 

 days. 



Attacks especially adult 

 liogs. 



Gpneral symptoms pre- 

 dominating'. 



Redness more extend- 

 ed, more constant. 



Congestive lesions o f 

 all the organs, with pe- 

 techial extravasations 

 and exudative inflamma- 

 tions of serous mem- 

 branes. 



In very slow cases the 

 intestine may contain ul- 

 eerations at Peyer'.*; 

 patches as in pneumo-en- 

 teritis. 



Bacilli cylindrical, non- 

 motile, stained by the 

 Gram and Weigert meth- 

 ods. 



Especially anaerobic. 



Inpculable to the mouse, 

 rabbit and pigeon, but 

 not to the guinea pig. 



Culture in gelatin has 

 the appearance of a test- 

 tube brush. 



PNEDMO- ENTERITIS. 



Course slow ; 20 to 25 

 days, never less than 8 to 

 10 days. 



Attacks especially young 

 pigs. 



Gastro-pulmonary symp- 

 toms predominating. 



Redness less 

 less constant. 



extended, 



Inflammatory lesions of 

 a necrotic character in the 

 intestine posterior to the 

 ileo-coecal valve, and in the 

 mesenteric and bronchial 

 glands. 



When the disease is rapid 

 the intestinal changes may 

 not have reached their 

 usual stage and thus may 

 cause the disease to be mis- 

 taken for rouget. This mis- 

 take is more easily made 

 in cases in which tlie pul- 

 monary lesions have not 

 had tirue to develop. 



Bacteria ovoid, motile 

 not stained by the Gram or 

 Weigert metliods. The cen- 

 ter stains much less than 

 the periphery. 



Especially aerobic. 



Inoculable to the mouse, 

 rabbit, and guinea pig, to 

 the pigeon only when very 

 large doses are employed; 

 not to the chicken. 



Culture has the form of 

 globules covered with crys- 

 talline asperities. 



SWINE PLAGUE. 



Pulmonary localiz 

 tion predominating. 



Broncho-pneumonia 

 with caseous foci. 



Bacteria ovoid, non- 

 motile, staining only 

 at their extremities. 



Inoculable to the 

 mouse and to the rab- 

 bit, and wlien large 

 doses are employed to 

 the guinea pig, pigeon 

 and chicken. 



■■■■■ [From the lack of distinctive names for the various infectious 

 diseases of swine which have been described in different coun- 

 tries, the morphological and biological similarity of their germs, 

 and the absence of any post-mortem lesions which are absolutely 

 characteristic, there still exists considerable confusion as to their 



