200 



SWINE DISEASES 



Construction of buildings. 



The construction of buildings to be of material that will permit of 

 daily cleaning and disinfection, stone, brick, tile, and concrete being 

 especially recommended. 



Arrangement of plant. 



1. The arrangement and equipment of buildings to be such as to 

 insure the production of a pure and uncontaminated product. 



2. Swine to be kept in separate buildings located a sufficient distance 

 from the building containing the bleeding (either virus or serum) and 

 hyperimmunizing rooms and in which swine are to be placed for the 

 latter purpose only. 



Fig. 21. SERUM CKNTKIFUGING ROOM. 

 1. A ten-quart centrifuge. 2. a four-quart centrifuge. 



3. The serum bleeding room, the virus bleeding room,' and the 

 hyperimmunizing room to be separate and distinct rooms. 



4. The preparation of serum, and the preparation of virus from the 

 whole blood, to be operations conducted in separate and distinct rooms 

 without direct communication with each other or with the foregoing 

 not larger than an opening which will permit the transfer of receptacles 

 containing the freshly drawn blood, and to be used for no other purpose. 



5. Separate washing and sterilizing rooms to be provided. 



6. The prepared serum and virus to be stored in properly cooled 

 rooms. 



7. Swine kept for virus production and the testing of serum to be 

 properly isolated so as to reduce to a minimum the danger of spreading 

 infection. Separate and distinct feed rooms to be provided for such 

 animals. 



