io6 



I'liii.TNN' i)isi:.\si:s AND riii:i 



1 Ki:.\r.Mi:NT 





Fig. 2. 



lsprr<i!lhis finniiiatits. Greatly enlarged. (After Mohler 

 and Buckley). 



Tlie.-c IT! )iihls an.l tlieir spores occur on dead orfranic material 

 like straw. i;rain, etc. They arc inhaled in hreathiny or swal- 

 lowed with the food. This leing the ca-e the importance of 

 avoiding must}' litter, and mould}- or nnisty grain of all kinds 

 is apparent. As with most other diseases the resistance of the 

 indi\idual a'_;ainht infection is here an important matter. Some 

 fowls will Ije al)le to stand mu.^t\- litter and grain without any 

 hru-ni. wliilc others will iirom])tl}- develop aspergillosis. When 

 once present in a llock aspergillosis is prohahly transmitted fmni 

 generation to generation through the eggs. 



Treatment. The disease is prevented h}- having clean, dry, 

 well ventilated hou^e< and avoiding the u-e of mouldy litter or 

 grain. \ igortnis birds under sanitary conditions are fairly re- 



