The Simultaneous Method 143 



II Your farm may become infected with cholera and new born pigs 

 or newly purchased hogs after vaccination may develop the disease. 

 This is especially true if any of the vaccinated hogs become very sick. 

 Wlien a vaccinated hog becomes sick by the double method, it is often a 

 mild form of cholera, hence neighbors should be kept away from the 

 pens, as the urine and feces may contain hog cholera virus. 



III If the anti-hog cholera serum happens to be poor, the hogs de- 

 velop hog cholera. 



IV Some farmers claim the double method reduces the number of 

 pigs a gilt or sow will produce. Extensive experimental data on this 

 particular point is not available at present. The combination method 

 is the same as the double method except the virus is injected about 

 3 days after the serum. As I see it, there is not any material advan- 

 tage between the double and the simultaneous method. 



A clean well limed and heavy bedded pen should be provided, and 

 the serum injected in all ho,gs undetr the loose skin back of the ear. Put 

 virus on opposite side of the serum. USE NO VIRUS IN CHOLERA 

 HERDS. 



Below 20 pounds, 20 cubic centimeters. 



20 to 30 pounds, 20 to 25 cubic centimeters. 



40 to 75 pounds, 30 to 35 cubic centimeters. 



100 to 150 pounds, 40 to 60 cubic centimeters. 



175 to 250 pounds and over, 65 to 80 cubic cenitimeters. 



Four cubic centimeters are approximately one teaspoonful. 



One pint is approximately 480 c. c. (cubic centimeters) or milli- 

 litres. One cubic centimeter or c. c. equals one millilitre or (mil.) or 

 about 15 drops. 



If the simultaneous method is used and cholera is in the herd, or the 

 herd is dangerously exposed, or sick hogs are treated, the above dose 

 should be doubled. Hogs with temperature over 103.5 should receive 

 a double dose. 



POISONING 



(CockU Burr) 



When hogs eat poisonous feeds, they usually vomit, but with the 

 cockle burr this is not true. Hogs will die in numbers as though they 



