314 Missouri Agricultural Report. 



treatment, and every one should use it when in danger of infec- 

 tion. 



The simultaneous treatment is simply the administering of 

 a few drops, or up to two cubic centimeters, of cholera blood at 

 the time of giving the serum, which produces a varying attack 

 of cholera. In this way there is produced an active or, more or 

 less, lasting immunity, the length of tirae depending a great deal 

 on the age of the pig when treated and how severe an attack of 

 cholera he develops from the treatment. Great care must be 

 taken in this treatment to make sure that a sufficiently virulent 

 virus is used to produce a severe enough attack to produce the 

 immunity desired or you may have the same effect as though 

 you had only given the single treatment, and yet thinking you 

 have the double treatment cause you a great deal of loss in case 

 the hogs become exposed four or five months later. Again, you 

 must have serum potent enough to protect the hog against chol- 

 era to such an extent that the animal has the disease in such a 

 mild form that it will still recover. In this treatment, especially, 

 does dieting play a great part. One should put the animals on 

 short rations for a day or two before treating and then continue 

 to feed lightly for a week or so; do not feed heavy feed such as 

 corn, but give mostly slop. These animals should be kept in 

 strict quarantine for at least twenty-one days, and the lot in 

 which they are held should be kept thoroughly disinfected with 

 fresh lime. 



We find that either of these treatments give very good 

 results when properly handled, but with either of them very little 

 can be accomplished where one man vaccinates and does his best 

 to get rid of the cholera and his neighbors harbor the infection. 

 But if the whole neighborhood or township combine to form 

 "anti-hog-cholera clubs" and then every one does his part, great 

 advancement can be made in eradicating cholera. 



But before we can expect this it is necessary for you, Mr. 

 Farmer or Mr. Stock Raiser, to learn that this is your problem 

 and not ours. We can help you and work out plans along which 

 to work, but alone we can do practically nothing toward getting 

 rid of this much-dreaded disease. With your hearty co-opera- 

 tion and help we can get results that will soon make a great 

 showing in the shortening of the now long list of deaths due to 

 hog cholera, and in this way soon put the hog industry on the 

 high plane where it belongs. So to sum up the essentials in 

 controlling hog cholera we may list them as follows: 



