Figure 24. A modern poultry farm with ample range facilities for young birds, isolated from 

 the laying quarters which house the adult hens. Cohabitation between young and old stock is 

 avoided. 



Average Midwestern Farm Layout 



D 



Bro 00 EiR House. 





o 



Pasture. 



Moc^Barn I IHennery 



CornCrib 



n 



QAR/JQE. 



Figure 2.5. A schematic illustration of a farm permitting cohabitation of young and old stock 

 — a practice which perpetuates disease. 



(22) 



