DISEASES AND TREATMENT OF CATTLE 
hot months of spring and summer. It may, however, affect 
poor cows. It is also noticed occasionally to affect cows at 
almost any time of the year, even in the winter, in rare cases. 
Causes. — The exact causes of this disease are not clearly 
understood, but it is supposed that on account cfi the hot 
weather, and the cow being fat and well supplied with blood, 
fever is set up which affects the nerves. When the nerves 
are affected, the milk glands also become affected, and do not 
secrete the milk, and the milk not being secreted as it should 
be, leaves the blood charged with material which should go 
to form milk. The blood becoming charged with this ma- 
terial affects the brain and nerves, soon causing paralysis. 
It is usually noticed to come on in from one to eight days 
after calving. The sooner it comes on after calving, the more 
fatal it is. Cows taking it in one or two days after calving 
seldom get better, but if after that time there is more chance 
of recovery. 
Fig. 65. — Indications of MiHc Fever. 
Symptoms. — At first there is a wild, glary appearance of 
the eyes and very little milk in the bag, which, in most cases, 
seems soft and flabby. In trying to walk she has a stagger- 
ing gait. These symptoms gradually get worse. Saliva runs 
from the mouth, and she seems greatly excited, staggers, and 
acts like a drunken man. Finally she gets down, and is 
unable to rise. Her head is turned round to her side. Her 
ears are lopped over and her eyes now have a peculiar, dull, 
