ACUTE INFECTIOUS DISEASES. 93 



in lambs infected from castration or docking 

 wounds. They may be unable to put the nose to 

 the ground to drink from a pail or even to nurse 

 for as much as two weeks and yet retain their 

 ability to swallow milk given as a drench. During 

 most of this time, they may be able to walk with- 

 out much difficulty and even to run rather swiftly 

 in a straight line, and yet when down be unable 

 to rise without help. These cases when down lie 

 on the side with the legs extended stiffly, hori- 

 zontally. In turning when running, they are al- 

 most sure to fall. If they fall in the warm sun- 

 shine and lie there for a time, a very high tem- 

 perature up to 108 to 110 degrees Fahrenheit 

 speedily ensues. Recovery is rare. 



Once this affection appears in a flock it is apt 

 to affect as high as twenty-five per cent of the 

 lambs having access to the infected quarters after 

 castration. 



Treatment: After the characteristic symptoms 

 appear among sheep, very little can be done. Since 

 the infection occurs only among flocks having 

 access to a much used corral, the entire band 

 should be moved to other quarters. Immuniza- 

 tion is practical only in high priced animals. 



10. Rabies. 



Hydrophobia; lyssa; mad-dog; canine rage. 



This disease has assumed importance in the 

 West due to outbreaks among dogs, coyotes and 

 other predatory animals on the range. Much loss 

 has occurred among sheep from this disease, and 

 the zone of infection is constantly increasing. 



