320 



Missouri Agricultural Report. 



Fig. 10. Method of inoculating a brood sow heavy with pig. 

 Veterinary Department, Missouri Experiment Station. 



this method to insure permanent immunity. Breeders whose 

 farms are free from infection prefer to re-inoculate their "show" 

 animals with the serum alone, rather than use the simultaneous 

 method ; so as to avoid a possible risk of infecting their farms. 



Losses From Cholera. — In this connection it may not 

 be out of place to mention that, although the full ex- 

 tent of the drain which hog cholera entails upon the 

 swine industry cannot be accurately estimated, data at 

 hand show that the losses in many individual herds in this state 

 have run from $2,000 to $5,000 during the past year ; and in one 

 registered herd the loss amounted to more than $10,000. It is 

 safe to say that single counties have in some years suffered a loss 

 of $50,000 to $100,000 from this disease, counting the deaths of 

 hogs, depreciation of profits from putting immature stock on the 

 market, and the inconveniences and hardships that have fallen on 

 many, who, except for this disease had planned wisely on borrowed 

 capital. 



A conservative farmer of Nodaway county estimates that the 

 mortality from hog cholera in that county in the individual herds 

 that are attacked is about 90^; and for the entire county fully 

 20^ of all the hogs die from this disease. Another prominent 

 farmer of Atchison county writes : "I think that fully 30^ of the 

 hogs of this county die from cholera; this estimate, if anything, 

 is below rather than above the actual figures." The enormous 



