Course. Diagnosis. Treatment. 17 



with, their front legs. The appetite diminishes more and more, 

 there is emaciation and debility and also dyspnea and cough. 



In pleurisy with pyemic cachexia of rabbits, as described by 

 Koppanyi, the clinical picture sometimes varies from the one described 

 above. There occur very acute cases leading to death in two to three 

 days, with rapidly increasing dyspnea and great prostration, high 

 temperature, followed l)y a rapidly increasing subnormal temperature. 

 Then there are fre(|uently observed chronic cases with the formation 

 of subcutaneous al^scesses on various parts of the body or abscesses 

 encapsulated in the internal cavities. After the spontaneous or artificial 

 opening of such abscesses, the animals may recover, or more rarely 

 they may die on account of acute exacerbations. Otitis interna some- 

 times occurs with ol)li(iue holding of the head or acute meningitis with 

 symptoms of excitement (Barrat). 



Course and Prognosis. In many cases the symptoms are 

 intensified rapidly and the animals die within three to five days 

 (acute type). In other cases, liow^ever, the symptoms are less 

 acute from the start and the disease lasts fifteen to eighteen 

 days (subacute form), or it lasts for a long time with mild 

 symptoms (chronic form). All acute cases end fatally; a com- 

 plete recovery is also seen rarely in the subacute or chronic 

 variety. 



Diagnosis. Characteristic for the disease are the severe 

 local manifestations accompanied by high fever; Koppanyi 's 

 disease of rabbits can usually be excluded only by a bacteriologic 

 examination. In coccidia rhinitis, fever, prostration and 

 dyspnea are less pronounced and microscopic examination 

 shows the presence of coccidia in the nasal secretion ; there 

 is also no inflammation of the serous membranes. 



Treatment and Prophylaxis. Since irrigation of the nasal 

 cavity (see page 7) with 1% creolin or 3% boracic acid solu- 

 tion does not materially influence the course of the disease, 

 our main efforts have to be made in the direction of prophylaxis. 

 All sick animals ought to be killed at once and their cadavers 

 must be destroyed. The cages and the barn, including the avails, 

 should be thoroughly cleaned and disinfected; newly bought 

 animals should be kept in quarantine and under observation for 

 fourteen days. 



Literature. Barret, Eev. vet., 1908, 147.— Beck, Z. f. Hyg., 1893, XV, 363.— 

 Kasparek, O. M., 1892, 333.— Koppanyi, Z. f. Tm., 1907, XI, 429.— Krans, Z. f. Hyg., 

 1897, XXIV, 396.— Volk, Centralb. f. Bakt., 1902, XXXI, 177. 



6. Croupous Rhinitis. Rhinitis crouposa. 



(Nasal Croup.) 



Croupous rhinitis represents an intensely inflammatory 

 process of the nasal mucosa, usually with the formation of ex- 

 tensive pseudomembranes. 



