Massachusetts 

 agricultural experiment station 



Control Series Bulletin No. 112 June, 1942 



Twenty-second Annual Report of 



Pullorum Disease Eradication 



in Massachusetts 



By the Poultry Disease Control Laboratory 





In the 1941-42 testing season, 667,824 samples (662,715 chicken and 5,109 

 fowl other than chicken) were tested. In 366 chicken flocks, 653,080 birds were 

 tested and of these 591,628 were in non-reacting flocks. The percentage of 

 positive tests was 0.27. No reactors were detected among tested birds in 5 of 

 the 13 counties. The marked increase (99,153) over the previous season in the 

 number of birds in non-reacting flocks reveals further progress in the establish- 

 ment and maintenance of pullorum-free flocks. 



MASSACHUSETTS STATE COLLEGE 

 AMHERST, MASS. 



