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POULTRY DISKASES AND THKIR TREATMENT. 



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Fig. 22. Asin-rgilhis jiini^iiii (icith (.iihrged. (After Mohler 



and Buckley). 



These moailds an ! their spores oceur on dead organic material 

 like straw, grain, etc. They are inhaled in l)reathing' e:r swal- 

 lowed with the if}'M\. This Lcing the ca^e the importance of 

 avouling musty litter, and monld.y or nn;sty grain of all kinds 

 is apparent, .'vs with most o-ther diseases the resistance of the 

 iTldi^'idual against infection is here an important matter. Some 

 fovTs will be able to stand musty litter and grain without any 

 harm, wh'Je others v.dll promptly develop aspergillosis. \\ hen 

 once present in a flock aspergillosis is probabh- transmitted from 

 generation to generation through the eggs. 



Trcat-.v.cnt. Tlie disease is prevented by having clean, dry, 

 well \'entilatc(l houses. and avoiding the use of mouldy litter or 

 grain. A igorous birds under sanitary conditions are fairly re- 



