202 VETERINARY STATE BOARD 



What domestic animals suffer most from trichinosis? Give usual 

 channels of infection, diagnosis and prevention. 



This disease occurs most commonly in swine, rarely in dogs and 

 cats. The infection enters through the digestive tract by eating 

 meat containing the parasite, trichina spiralis. 



Diagnosis: Rheumatoid symptoms; harpoon muscle and obtain 

 specimens for microscopical examination ; examine the faeces for the 

 adult worm. Hogs often show diarrhoea, and during the migration 

 of the embryos into the muscles, rubbing, scratching, difficult mas- 

 tication, and painful breathing. 



Prevention: Destroy carcasses of trichinous animals. Destroy 

 rats and mice around slaughter houses as they are frequent hosts 

 of the parasite. 



Describe a case of spasm of the muscles of the hind leg and its treat- 

 ment. 



Usually seen in the femoral region, due to a nervous affection of 

 the anterior crural muscles. Appears suddenly after standing; 

 leg held stiffly ; appears longer than its fellow ; knuckling at the fet- 

 lock, resting on the toe ; difficulty in moving forward or backward, 

 dragging of the extremity; anterior muscles rigid 



Treatment: Rub stimulating liniment over the stifle; rest the 

 patient and give a laxative diet. 



Diseases op the Skin 



Give the symptoms and treatment of acne. 



Acne is an inflammatory disease of the sebaceous glands, charac- 

 terized by tenderness of the skin, swellings the size of a pea, vesicles, 

 pustules, exudation, loss of hair, scars and sometimes enlargement 

 of the submaxillary lymph-glands ; absence of fever. Treatment 

 consists of the application of astringent and antiseptic washes, such 

 as a 2 per cent, solution of aluminum acetate or acetate of lead. 



Describe the symptoms and give the treatment of favus (ringworm). 



Characterized by the presence of numerous red spots in the 

 skin, which gradually enlarge and become covered with a thin, gray- 

 ish scale under which is serum ; the hair breaks off, the circumfer- 

 ence of the diseased area becomes reddened, the centre, gray-colored 

 and cupped shape; there is great itching present and the disease 

 tends to spread over various parts of the body. 



Treatment: Scrape or curette deeply; paint with tincture of 

 iodine or use mercurial ointments. 



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