22 DISEASES OF THE NASAL PASSAGES 



oxid ointment or vaselin applied. The use of internal anti- 

 septics (salol 0.12-0.2, etc.) is indicated to combat the 

 general infection. Autogenic vaccines may be used. 



Prophylaxis.— All material soiled by the nasal discharges 

 as well as all animals that die should be burned and well 

 covered with limej^all parts of the hutch and the runways 

 thoroughly disinfected, and a quarantine of at least two 

 weeks imposed upon all newly acquired animals. 



PARASITIC NASAL CATARRH OF RABBITS. 



Rhinitis Coccidiosa. 



Definition.— An inflammation of the mucous membrane 

 of the nasal passages and sinuses due to an infestation with 

 coccidia. 



Etiology.— This condition is due to the Coccidia perforans 

 or the Coccidia oviformis, which gains entrance to the nasal 

 passages and sinuses. The discharges of affected animals 

 are infectious. Damp hutches with soiled litter and filth 

 in them favor the spread of the disease. Young animals are 

 more susceptible than those fully matured, the latter usually 

 contracting the disease in a mild form. 



Symptoms.— The clinical symptoms are similar to those of 

 infectious nasal catarrh. The nasal discharge is present, 

 being serous at first, later becoming thick and tenacious. 

 After two or three days the animals become depressed, fre- 

 quently gnashing the teeth and rubbing the nose. The tem- 

 perature, however, is subnormal. In some cases the mucous 

 membranes of the mouth and the conjunctiva exhibit 

 catarrhal symptoms. In cases where the coccidia pass into 

 the middle ear, the semicircular canals become involved 

 causing the head to be carried to one side, staggering gait, 

 and in some cases rolling over and over. Spasms of the 

 muscles occur followed by paralysis. Paralysis, however, 

 is a symptom of many irritating conditions in rabbits which 

 in other animals ordinarily cause excitement. Later a pro- 

 fuse diarrhea is noticed followed rapidly by exhaustion and 

 death. 



