484 



COMMERCIAL POULTRY RAISING 



windpipe and the victim is suffocated. Other times the head 

 swells twice its normal size, blinding both eyes, and the victim 

 is a miserable-looking creature, indeed. When this stage is 

 reached it is quite useless to attempt a cure. 



The most common form of roup is an exaggerated cold, and 

 nothing worse. It is caused by exposure for a prolonged period 

 to those conditions which produce colds. Obviously, the first 

 step is to rectify the conditions which foster the disease. Imme- 



Fig. 303. — The ordinary household scales come in handy for the poultryiiian. 



diately a case of roup is detected, it is a good plan to treat the 

 entire flock with a roup preventative for about a week, or until 

 one is assured the remaining birds have not been infected. This 

 may be done through the drinking water. Sick birds should 

 be isolated at once, and the houses whence they are removed, 

 particularly the drinking fountains, thoroughly cleaned and dis- 

 infected. 

 Treatment for roup, if it is to be treated at all, must begin in 



