Missouri Duroc- Jersey Breeders' Association. 



315 



1. Organization and co-operation. 



2. Sanitation and quarantine. 



3. Proper vaccinating with good serum. 



4. Proper feed and proper dieting. 



, With these few essentials properly carried out in each town- 

 ship in the State the hog cholera problem, I think, would soon 

 be solved. 



HOG CHOLERA DISCUSSION. 



(Dr. J. W. Connaway, professor of comparative medicine and veterinarian to tlie Experiment 

 Station, College of Agriculture, University of Missouri.) 



Mr. Chairman and Members of the Duroc Swine Breeders' 



Association: In discussing the excellent 

 paper presented by Dr. Gingery I can add 

 but little except to emphasize the impor- 

 tance of better co-operation among the 

 farmers in carrying out simple rational 

 measures of prevention. 



There is one point, however, that has 

 not been touched upon which is a matter 

 of special importance to the swine breed- 

 ers, and that is the effects of cholera on 

 the reproductive functions of brood sows. 

 A conversation I have had with Mr. 

 Dr. Connaway. McKcc, our gucst from Kentucky, has 



induced me to say a few words on this matter. Mr. McKee, as 

 you all know, thinks that in the hog line there is nothing better 

 than a Duroc — except "more Durocs." Hog cholera, he tells 

 me, has prevented him from having more of them — not only 

 from the death losses due to the disease, but also the losses that 

 result from abortions and conditions that prevent conception 

 or lessen the fertility of some of his good brood sows. The 

 experience of our Kentucky friend is not unique, for the same 

 thing happens in Missouri. Mr. McKee has been a warm sup- 

 porter of scientific investigations and teachings, and has tried to 

 avail himself of the benefits that come from such work. His 

 experience, however, in trying to secure a "life immunity" in 

 his breeding herd and to supply his customers with "perma- 

 nently immune" breeding animals, by means of the simultaneous 

 method of immunization, has been so expensive and so unsatis- 



