298 



SWINE PRACTICE 



operated for utilizing the waste products of the establishment to be located 

 so as to prevent contamination from this source. 



9. Necessary dressing and toilet rooms, properly equipped and located, to 

 be provided. Also bottling and packing rooms. 



10. Provision for the sanitary disposal of all manure, offal and debris. 



OPERATION 



1. The operation of serum plants to be under the direct supervision of a 

 competent veterinarian or other professional man whose training and expe- 

 rience have fitted him for this work. 



2. Prohibition of the sale of serum and virus produced from animals 

 affected with any contagious disease other than hog cholera and of any 

 contaminated serum or virus. 



Fig. 82. SEEUM CENTEiFUGiNS BOOM. 1, a ten-quart centrifuge; 2, a four- 

 quart centrifuge. 



1. Electric sterilizer. 2. Autoclave. 3. Type of utensil used for collecting 



blood 



3. Provision requiring full and complete records of all steps in the manu- 

 facture and test of serum or virus. 



4. The label on the container of serum or virus to show the true name 

 of the product, the name or number of the manufacturer, the date of prep- 

 aration, or the date after which the manufacturer no longer guarantees the 

 product, and a serial number to identify the product with the records of the 

 establishment. 



Two general methods are utilized in the immunization of swine 

 with anti-hog-cholera serum — the serum alone method and the simul- 

 taneous method. 



