Massachusetts 

 agricultural experiment station 



CONTROL SERIES BULLETIN No. 93 JUNE, 1938 



Eighteenth Annual Report on 



Eradication of Pullorum Disease 



in Massachusetts 



By the Poultry Disease Control Laboratory 



The 1937-38 testing results, reported in this bulletin, reveal steady progress 

 in pullorum disease eradication. A marked increase was observed in the number 

 of tested birds and tests over the previous season. However, the outstanding 

 features of the 1937-38 season are the further reduction in the average percentage 

 of positive tests and the increase in the number of non-reacting flocks. It is 

 encouraging to note that poultrymen realize the significance of pullorum clean 

 flocks and are exercising the necessary precautions to maintain free flocks. 



MASSACHUSETTS STATE COLLEGE 

 AMHERST, MASS. 



