PULLORITM DISEASE 5 



5. — Can the disease spread among adult birds? Yes. Non-infected 

 adults may contract the disease when placed in contact with infected birds. 

 The rate of spread is influenced by the condition of the flock and type of manage- 

 ment, but generally speaking it appears to be slow. 



31 





Photograph 4 — Oviduct Removed from an Infected Hen. 

 Parts I and II are the funnel and albumen secreting portions of the oviduct, respect- 

 ively. The funnel or fimbriated portion shows an enlarged and thickened wall. The 

 albumen secreting portion (anterior end) is impacted with hard, dried egg material. 

 The exterior surface of the impacted region is roughened due to inflammatory condi- 

 tions. Such changes may be found occasionally as a result of inflammation of the 

 oviduct and other abdominal organs. Part III is the shell gland portion. Refer to ques- 

 tion 4. 



