SUMMARY 303 



the end of the outbreak who have had a severe attack of the 

 disease, but have not died. These animals are frequently gaunted 

 up, have a chronic cough, and develop into chronic runts. It 

 is often a question what to do with these animals. While the loss 

 may have already been so severe that the owner feels as if he ought 

 to try and save these animals if possible, yet it will usually be 

 found the better poUcy to get rid of them by knocking them in the 

 head. They seldom do any good, and usually remain runts as long 

 as they hve. Not only this, but it appears quite probable that in 

 many instances these cases continue to scatter germs over the 

 premises and sow the seeds for another outbreak in the young 

 shoats of the following year, or in any new animals that may be 

 added to the herd during the winter. 



(20) New Cattle and Sheep. — These animals, as well as newly 

 bought swine, are capable of bringing hog-cholera infection upon 

 the farm in sufficient amount to cause an outbreak of the disease 

 if the cattle are placed in the same feed lot and pastures with the 

 hogs, as is usually done. This is especially hable to happen if the 

 cattle are purchased in a district where cholera is present, or if they 

 be shipped in infected cars, or brought through infected pubhc 

 stock-yards. A great amount of care is necessary in this connec- 

 tion or we will have an outbreak of cholera in the herds which we 

 are at a loss to explain. Always remember that other animals are 

 just as capable of carrying the disease-producing germs as are the 

 hogs themselves, and that once the infectious material gets into a 

 feed lot it will not be long in causing signs of sickness. 



(21) Infected Public Roads. — In the Central Western States, 

 where the greatest number of our hogs are raised, and where hog- 

 cholera is seen in its most severe form, a majority, perhaps, of the 

 public highways have been infected by midsummer of each year 

 from the passage over them of diseased swine or of wagons carrying 

 sick or exposed animals to market. Just where this infection is 

 present, and where it is absent, it is impossible to tell. Accord- 

 ingly, the only safe plan is to keep your hogs entirely off of the 

 public road. Never allow them to forage along the public highway. 

 To do so is to invite an outbreak of cholera in your herd. 



It is also a very good plan to have your hog lots just as far as 

 possible removed from the public roadway. In this way you will 



