38 Veterinary Medicine. 



DIFFERENTIAL SYMPTOMS AND PHENOMENA. 



Hog Cholera. 



Incubation 6 days -j- 



Mucosa; not necessarily 

 congested 



Petechia; on snout, eyes, 

 mouth, etc 



Necrotic ulcers on snout, 

 mouth, skin, etc 



Furred tongue, vomiting 

 common 



Temperature high in 

 acute cases (104 to 

 108 ) 



Lies on belly mostly, 

 abdomen hot, tender. 



Moves stiffly, feebly, un- 

 steadily with grunting, 

 may be paraplegic 



Bowels 1st costive, fa;ces 

 molded, glazed; 2d or 

 3d day , or before death , 

 diarrhoea, profuse, 

 watery, fcetid, bloody, 

 black on slops, — yel- 

 low on corn ( maize) _. 



Everted anus dark red_. 



Cough often present, 

 hurried breathing 



Spleen slightly enlarged 



When death is deferred 

 1 to 2 weeks, necrotic 

 button -like ulcers on 

 ilio-ca;cal valve, cae- 

 cum, colon, or ileum__ 



Lobar pneumonia un- 

 common 



Kills rabbits (5 to 7 days) 

 and Guinea pigs (7 to 

 12 days) Pigeons sick- 

 en but survive 



Blood serum of hog 

 cholera patient causes 

 agglutination of ba- 

 cilli in cultures; (not 

 constant, occurs with 

 other bacilli) 



Swine Plague. 



Incubation 1 day to +• 

 Mucosa; congested 



Petechia; on snout, eyes, 

 mouth, etc 



Necrotic ulcers rare 



Vomiting less likely 



Temperature high in 

 acute cases 



May lie on side 



Stiff but less so, Paretic. 



Rouget. 



Incubation 1 day 



Mucosa; deeply congest- 

 ed, dark red, violet 



Petechia; extensive 



Necrotic ulcers less fre- 

 quent 



Vomiting not uncom- 

 mon 



Temperature very high, 

 107 to 109 



May lie on side 



Stiff, weak, paraplegic __ 



Diarrhoea less marked, Diarrhoea usually sets in 

 may be entirely absent 



Anus may not be deep 

 red, less everted 



Cough, hard, frequent; 

 wheezing breathing. 

 Auscultation and per- 

 cussion may show lung 

 consolidation toward 

 lower border. May 

 bleed from nose 



Spleen usually little al- 

 tered 



Necrotic, button - like 

 ulcers on ceecum rarely 

 marked 



Lobar or lobular pneu- 

 monia a marked lesion 



Kills rabbits (1 to 12 

 days), Guinea pigs (1 

 to 4 days), pigeon (48 

 hours) 



Anus may be less red, 

 less everted 



Cough absent, save in 

 latter stages with pul- 

 monary consolidation 



Spleen enlarged, soft, 



grumous 



Necrotic ulcers on bowels 



Pulmonary and enteric 

 inflammation rare 



Kills pigeon ( 3 to 8 days ) 

 rabbit (4 to 8 days) 

 Guinea pig resists 



