INFECTIOUS DISEASES 157 



slight abrasion in the skin; the part becomes in- 

 flamed, swollen, or cedematous. An abscess may 

 also form. ^In case an open wound is infected, it 

 may become badly swollen, the granulations, red 

 and unhealthy in appearance, and pus and other 

 secretions collect on its surface. 



The body temperature may be elevated and the 

 appetite impaired. Muscular tremors are some- 

 times noticed and the hog is dull and stupid. In 

 serious cases of the disease, the animal lies 

 around in the pens, weeds, or in some quiet, cool 

 place. It becomes very weak and emaciated. 

 Death occurs in a short time. However, in most 

 cases of general blood poisoning recovery occurs, 

 and the hog soon improves in condition. 



Treatment. — The treatment is mostly preventive 

 and consists in giving wounds the proper atten- 

 tion, especially if extensive. Antiseptic precau- 

 tions should be observed, as recommended in all 

 operations. Abscesses should be opened as soon 

 as formed, and at the lowest point, in order to 

 permit proper drainage. The after treatment con- 

 sists in washing the part with a two per cent, 

 water solution of some reliable disinfectant, once 

 a day for a short time. The opening should not 

 be permitted to close until the cavity has filled 

 in. Large wounds should be attended to care- 

 fully and kept clean by washing them with a dis- 

 infectant wash and dusting ■ the surface with 

 powdered disinfectants (boric acid, calomel, etc.). 

 Afl dead tissue in the wound must be removed. 



