428 The Diseases of Animals 



the nervous system, which is shown by a peculiar vacant 

 stare in the eyes and twitching or trembling of the 

 voluntary muscles. The disease comes on gradually 

 and seldom causes any loss, as it can be remedied by 

 withholding the cotton- seed meal. In fattening cattle 

 for the market on cotton-seed meal, it is seldom advis- 

 able to full -feed them for more than one hundred days. 

 The symptoms described may appear after the animals 

 have been on full feed for seventy -five days. 



When swine are fed large quantities of cotton -seed 

 meal there sometimes results a severe irritation of the 

 bowels, which in some respects resembles hog cholera, 

 and may cause death. There may also be indigestion 

 and heart failure. Swine sometimes die from an excess 

 of cotton -seed meal when following cattle in the feed 

 yards. 



DIRTY HAT 



Hay that is grown on river-bottoms that are subject 

 to overflow sometimes contains a large amount of sand 

 and other dirt. When such hay is fed it may set up 

 severe diarrhea, due to irritation of the bowels. The 

 treatment is to remove the cause. Dirtj' or musty hay 

 should not be fed to horses on account of the danger 

 of digestion troubles, and its tendency to cause heaves. 



LEAD POISONING IN CATTLE 



Lead poisoning in cattle is rather common, and 

 arises in most eases from licking paint from boards, 

 drinking water from paint cans or kegs or from lead- 



