178 VETERINARY STATE BOARD 



What is the prognosis and treatment of purpura hemorrhagica? 



Prognosis: Depends upon the severity of the attack and the 

 complications. Average mortality 50 per cent. 



Treatment: Hygienic attention is very important; potassium 

 chlorate as a diuretic; give vasomotor stimulants as potassium 

 diehromate, quinine sulphate, strychnine sulphate and ergot ; inter- 

 nal antiseptics such as sodium salicylate, salol, calomel, turpentine ; 

 occasional small doses of linseed oil for its laxative effect, but do 

 not give strong or drastic purgatives; surgical measures such as 

 tracheotomy may be necessary. 



Define specific infectious disease. Name five of these diseases. 



A specific infectious disease is one that is caused by the multi- 

 plication of a single species of microorganism within the animal 

 body. This particular organism, and it only, can produce the 

 disease, e.g., anthrax, Texas fever, tetanus, glanders, tuberculosis. 



State the period of incubation of a case of street rabies in the dog. 



Varies from two weeks to three months. There are cases re- 

 corded with an incubation period of two years (?). Average, 22 

 days. 



Give the causes and treatment of an epizootic of scours in calves (white 

 scours). 



Accessory causes: Unclean surroundings; open umbilicus; and 

 hereditary debility. Specific cause : umbilical and intestinal infec- 

 tion with B. coli communis. 



Treatment : As a prophylactic measure, disinfect stables and the 

 external genitals of the mother before parturition; provide clean 

 surroundings for parturient animals. Disinfect the umbilical re- 

 gion; sterilize the milk, feeding utensils, or udder before feeding; 

 clear the intestinal tract of irritating matters with castor oil one 

 oiuice, or calomel 2 to 5 grains, and follow with subnitrate of bis- 

 muth 30 grains ; one teaspoonful of a 1 to 4000 solution of formalin, 

 to each pint of milk, is useful to check diarrhoea in artificially fed 

 calves, but it should be preceded by castor oil. 



Give the symptoms of rhino-adenitis. Mention the complications that 

 sometimes occur in rhino-adenitis. 

 Rhino-adenitis or strangles is a disease of young horses, mani- 

 fested by dulness, anorexia, mucopurulent nasal discharge, purulent 

 inflammation of the submaxillary lymph-glands which leads to rup- 

 ture and healing; fever; increased pulse. Complications: laryn- 



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