ACUTE INFECTIOUS DISEASES. 97 



16. Piroplasmosis. 



Carceag; ictero-hematuria; malarial catarrlial 

 fever. 



A disease not found in this country, but existing 

 principally in the Balkan states. 



Cause: Piroplasma ovis, resembling in shape 

 the causative factor of Texas fever in cattle. 



Symptoms: High temperature; loss of appetite, 

 and bloody urine. 



Treatment: Wholly preventive. 



17. Foot Rot. 

 Lip-and-leg ulceration. 



Two forms of foot rot are recognized on the 

 western range. One is non-contagious, and is due 

 entirely to wet weather and standing in mud which 

 softens the hoof and produces a condition prac- 

 tically the same as scratches in horses. 



The second type of foot rot is caused by the 

 Bacillus necrophorus, which, when affecting the 

 mouth at. the same time, is called "lip-and-leg 

 ulceration," and in some stages might be mis- 

 taken for foot-and-mouth disease by the inexpe- 

 rienced. 



Symptoms: The contagious form exhibits very 

 marked symptoms. The affected sheep limps; 

 swollen areas are found around the coronary band, 

 with a separation of the hoof, and little gangren- 

 ous spots having a very putrid odor occur around 

 the interdigital canal ; sometimes the infection ex- 

 tends to the eyes and nose and, in females, to the 

 genital organs. 



