LUNG PLAGUE OF CATTLE 371 



Prognosis. — Calves affected with necrotic stomatitis, if left 

 3 themselves, usually die, or if they recover, remain per- 

 lanently stunted in growth. On the other hand, if proper 

 reatment is administered early, most of them recover, 

 ealing requiring about two weeks. 



Treatment. — The treatment consists in thorough cleansing 

 ad disinfection of the mouth cavity. Twice daily the mouth 

 lould be syringed out with a 2 per cent, creolin solution in 

 r arm water. The patches of necrosis may be scraped off or 

 uretted away in so far as this is feasible. After the sores are 

 rigated it is recommended to cover them with a paste made 

 f one part salicylic acid and ten parts glycerin applied with 



stick or brush. Lugol's solution of iodin is also recom- 

 lended. The calf may be allowed to suck its mother, or if a 

 r eanling, should be fed liquid food, best milk. Plenty of 

 doI water should be kept within reach. 



Prevention. — The sick calves should be separated from the 

 ealthy ones. The mouths of exposed calves should be 

 samined once daily for lesions of necrotic stomatitis. Dis- 

 lfection of the stalls, pens, buckets, etc., should be made, 

 sing a 3 per cent, creolin solution. 



LUNG PLAGUE OF CATTLE. CONTAGIOUS PLEURO- 

 PNEUMONIA OF CATTLE. < 



Definition. — Lung plague of the ox is a specific contagio- 

 ifectious pleuropneumonia which may assume an acute, 

 ibacute or chronic form and is due to a filterable although 

 isible virus. 



Occurrence. — The disease does not exist in the United States 

 ; the present time. In 1843 an outbreak occurred in New 

 ork which had its origin in an infected cow imported from 

 ngland. In the years following the disease spread through- 

 it the country, getting as far west as the Mississippi River 

 id south to Virginia. It was not until 1892 that it was 

 lally entirely stamped out. 



Lung plague is now well under control in Europe, although 

 ill quite prevalent in Spain. Throughout Asia and Africa 

 le disease is general. Australia, New Zealand and Tasmania 



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