SANITATION 321 
Quarantine.—Provision should be made in large herds for 
quarters where hogs that have been purchased, or brought 
home from shows, can be kept entirely separate from the rest 
of the herd for at least three weeks. The plan of using portable 
pens and dividing the herd up into small groups has a marked 
advantage over keeping the hogs in a large piggery, in case a 
contagious disease breaks out. With the portable pens, all 
hogs are not exposed, and it is a simpler matter to effect a 
quarantine. 
Hog cholera is the most dangerous contagious disease that 
ies an ARAM PLAINS SESE I . ea ae 
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Fro. 86.—A form of brood house for sow and pigs. Easily removed to a clean place 
the swine breeder has to contend with. In case of an outbreak 
of either cholera or swine plague in the neighborhood, a most 
rigid quarantine should be put into force. There should be no 
visiting back and forth by either man or beast between infected 
farms and those which are clear, because the virus which causes 
the disease may be easily carried on the boots of the persons 
or the feet of animals. Even dogs have been known to carry 
the disease from one farm to another. Dogs should be tied up 
until an outbreak of this disease is under control. 
On the farm where disease breaks out, healthy animals 
should be separated at once from diseased animals, and differ- 
ent attendants should feed the two lots, each attendant keeping 
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