Missouri Duroc-Jersey Breeders' Association. 311 



tution and by-laws. Don't stop until you have every good 

 breeder of the breed in your State a member of your association. 

 Always be on hand at the meeting or meetings. Let every man 

 take a part in all the proceedings and get for your officers men 

 who will push all the time, men big enough and broad enough to 

 see the greatest object in view — the betterment of the breed in 

 general. We believe in a rotation of the ofTicials; don't make it 

 incumbent on one set of men to do this work for you all the time; 

 at different times get new men to take hold of the business, and 

 they will see the need of some one else working besides the men 

 elected to ofTice if the best results be accomplished. 



HOG CHOLERA. 



(J. B. Gingery, D. V. M., assistant professor veterinary science. University 



of Missouri.) 



Hog cholera is perhaps one of the most common diseases of 

 swine and one that causes more loss to the farmer and stock 

 raiser than all other diseases of swine combined. It is a specific 

 infectious and contagious disease, the blood being the tissue 

 mostly affected. It might be classed as a septicaemia, due to an 

 ultramicroscopic organism. That is an organism that is so small, 

 or else, owing to some peculiar characteristic of the organism, that 

 it cannot be seen under the microscope even by the aid of the 

 highest magnifying lens we have today. 



All attempts to grow this organism in the laboratory on 

 artificial media have been in vain as no results have yet been 

 attained, and we are still as much in the dark in regard to the 

 characteristics of the organism as ever. These two conditions 

 alone make this organism a very difficult one with which to work 

 or experiment. 



We find cholera in two forms, acute and chronic. The 

 acute being the most common and most fatal usually kills the 

 animal quickly, at least within a few days. 



The chronic form is a much more lingering form. The 

 animals live for from a few weeks to several months, then 

 many either recover or die. They usually die in an emaciated 

 condition. If the animal lives it usually requires considerable 

 time to fully recuperate from the effects of the disease, but once 

 over it this animal is then immune to cholera. We also quite 

 frequently find serious complications such as "pneumonia," 

 which seems to be a secondary disease accompanying cholera, 



