HOG CHOLERA 



263 



ding, straw piles, litter, rubbish, and mud holes. These 

 are carried from place to place by streams, wagons, birds, 

 and on the feet of men and animals. 



The disease appears in two forms, the acute, which takes 

 away the victim in a few hours, and the chronic, which 

 may last one or more weeks. 



Affected pigs are usually dumpish and listless, lying 

 around huddled together. Their appetite varies, and 

 their digestion is de- 

 ranged. The skin is 

 reddened and in- 

 flamed around the 

 ears, nose, and eyes, 

 along the belly, and 

 inside of the thighs. 

 Violent diarrhoea is 

 the characteristic 

 symptom. 



To prevent the 

 spread of the disease 

 in infected areas, all 

 hogs brought to the 

 farm should be quar- 

 antined for four 

 weeks. Dogs and 

 other migratory animals should be kept away, and care 

 should be taken not to visit infested farms. Hogs should 

 be pastured at a distance from highways, railways, and 

 streams. Troughs should be disinfected daily and pens 

 weekly with quicklime or some other good disinfectant, and 

 all wallow holes should be filled. Litter should be burned, 

 and old straw piles should not be left standing where pigs 



Fig. 96. — Kidneys from a cholera hog. On the sur- 

 face of the kidney are small blood spots which give 

 them a turkey-egg appearance. The white spot is a 

 blood vessel. 



