DISEASES AND PESTS OF FOWLS 



ASPERGILLOSIS 



A disease that exists more commonly than is usually suspected, 

 and is the cause of the death of large numbers of 

 young chickens 



Symptoms. Fowls gradually lose weight, 

 mope, and die without any pronounced ail- 

 ment except difficulty in breathing. In 

 adults the disease may be mistaken for 

 tuberculosis and in chickens for white 

 diarrhea. Aspergillosis of chickens is dealt 

 with under brooder pneumonia. Post-mor- 

 tem symptoms are whitish 

 or yellowish growths on the 

 windpipe, that can only be 

 definitely diagnosed under 

 the microscope. 



Cause. A fungoid growth 

 in the windpipe and bron- 

 chial tubes, sometimes ex- 

 tending to the lungs and 

 liver. Fig. 8 shows the 

 spores and filaments of the 

 species of aspergillosis 

 most commonly responsible 



Fic.7. HEAD SHOWING 

 BRAIN EXPOSED 



29 



