422 Western Live-stock Management 
the human skin will bear. A flannel cloth should be 
dipped into the castor oil and spread over the sow’s udder, 
after which hot packs may be placed over the flannel. If 
the pigs are alive and healthy, they will prevent the 
spread of the trouble to other parts, and only such portions 
as are already hardened need be given attention. 
PARALYSIS 
Young pigs in high condition, and receiving but little 
exercise, are sometimes troubled with the loss of the use 
of the hind legs. Several causes may be responsible, but 
relief may usually be secured by compelling the pigs to 
exercise, and feeding them a ration containing plenty of 
bone-forming material, as might be obtained by adding a 
little steamed bone-meal to their ration. One form of 
the paralysis which does not respond readily to such treat- 
ment is due to a pressure on the spinal cord caused by 
the dislocation of vertebrae, or by the inflammation of 
membranes surrounding the cord. In older hogs, espe- 
cially in pregnant sows, partial paralysis of the hind 
quarters sometimes occurs, and is usually fatal. Little 
can be done except to remove the animal from the others, 
so that further injuries will not be inflicted. The bowels 
should be loose, and if necessary a soapsuds enema given, 
or a dose of salts or calomel, and the animal kept on a 
nutritious diet. Occasionally, animals so affected will 
recover after farrowing, although of course it is impossible 
for a sow in such a condition to give birth to vigorous pigs, 
or to raise them herself. 
WORMS 
The worms which cause the most frequent trouble in 
pigs are the round intestinal worms, which inhabit the 
