128 SWINE ERYSIPELAS 



bacteriological examination will enable the positive diagnosis 

 to be made. (See hog cholera and swine plague.) 



2. Anthrax, which is very rare in swine. Here, too, 

 the bacteriological examination discloses the true nature of the 

 disease. 



3. Erj'themata due to various dietar^^ causes. 



The significance of a deep reddening of the skin about the 

 head, abdomen and thighs of pigs is not fully determined. 

 It is clear, however, that such a condition often occurs in the 

 absence, so far as present knowledge goes, of a specific infec- 

 tion. It is frequently found in pigs suffering from digestive 

 troubles, or poisoning from eating decomposed offal. 



§ 115. Preventive inoculation. Pasteur's preventive 

 inoculation was until recently the chief prophylactic means 

 employed against epizootic erysipelas. Metchnikoff found 

 that the blood of immunized rabbits was antitoxic, and L,orenz 

 maintains that the serum of swine that have recovered from 

 swine erysipelas is also antitoxic, and will produce immunity 

 in other animals. The treatment introduced by Lorenz is to 

 inject the immunizing serum in the proportion of i cc. to every 

 10 kilograms of the body weight of the animal. Two days 

 afterward o. 5 to i.o cc. of virulent culture is injected, and 

 after twelve days the dose is doubled. The use of the 

 immunizing serum is reported to be very successful. 



REFERENCES. 



1. Bang. Ueber Rotlauf-Endocarditis bei .Schweinen. Deutsche 

 Zeitschr.f. Tbieimed., Bd. XVIII (1891), S. 27. 



2. Jensen. Die Aetiologie des Nesselfiebers und der diffusen 

 Hautnekrose des Schweines. Deutsche Zeitschr. f. Thierined., 1892, 

 vS. 27S. 



3. LOEFFLER. Experimentelle Untersuchungen iiber Schweine- 

 Rotlauf. Arbeiten aus d. Kaiserlichen Gesundheitsamte, Bd. i (1885), 

 S. 46. 



4. LoRENZ. Die Schutzimpfung gegeii Schweinerotlauf mit 

 Anwendung eines aus Blutserum immunisirter Thiere hergestellten 

 Impfstoffes. Deutsche Zeitschr. /. Thiertned., Bd. XX (1894), S. i. 



