INFECTIOUS DISEASES 1 55 



should be thoroughly disinfected and all litter 

 removed to a place where the hogs do not come 

 in contact with it. In addition, the sows should 

 not be permitted to farrow close to an affected lit- 

 ter, or in a pen where an affected litter has been 

 kept. 



The pigs can be treated by washing the um- 

 bilical cord with a strong solution of carbolic 

 acid (ten per Cent, or more), or some of the 

 tar disinfectants. If the disease is present in the 

 herd, this should be practiced as soon as the 

 ' pigs are born. Such treatment causes the cord 

 to dry up, and the entrance of germs into the 

 tissues is prevented. The diarrheea and abscesses 

 should receive the proper treatment. 



SIMPLE SEPTICEMIA AND PYEMIA 



There is no essential difference between sep- 

 ticaemia and pyaemia, and writers classify all blood 

 poisoning as a septicaemia, as the immediate cause 

 of the diseased changes in the tissues are due to 

 the action of' the toxic substances, produced by 

 the invading microorganisms. 



The difference in the symptoms and diseased 

 changes in the tissues occurring in blood poison- 

 ing is due to the extent in which the tissues are 

 invaded, and the nature of the disease-producing 

 agent. The germs sometimes enter the system 

 by way of a wound and are distributei through- 

 out the body by the blood. In case of pyo- 

 genic bacteria, abscesses form in different parts 



