~ 54 DISEASES OF THE HOG. 
have the effect of causing more contraction of the 
muscular coat. Young pigs are very frequently 
attacked by diarrhea from some substance the 
mother has eaten. It is also the result of denti- 
tion. Poverty of the milk given by the sow, im- 
proper food, irregular feeding, cold and damp 
sties, sudden changes of temperature, green food 
given to the sow with litter when they have 
been too long deprived of it, not infrequently cause 
it. 
Symptoms: In simple diarrhea there is a dis- 
charge of liquid feces without any constitutional 
disturbance. The feces may be passed without 
any apparent pain or inconvenience to the animal. 
In other cases the discharges are very frequent 
and painful, which cause the animal much dis- 
tress; this form is usually accompanied with fever, 
quick pulse, fast breathing and loss of appetite and 
a tucked-up appearance of the abdomen, and the 
animal very soon becomes exhausted. There is a 
form of diarrhea which sometimes will be seen in 
the pig, caused by derangement of the liver, and 
may be of two kinds: first the form which is 
caused by an increase in the secretions of bile; 
the feces are liquid of a bright yellow color, at 
other times they will be green from the action of 
acid in the bowel, and the passage is accompanied 
by severe straining and pain and usually vomiting. . 
Second form differs from the first in that the pas- 
sages are black or brown and of a very unhealthy 
appearance and foul-smelling. In these cases 
