Massachusetts 

 Agricultural Experiment Station 



CONTROL SERIES BULLETIN No. 53 MAY, 1930 



Tenth Annual Report on 



Eradication of Pullorum Disease 



in Massachusetts 



1929-1930 



By H. Van Roekel, K. L. BuUis, and G. L. Dunlap. 



This bulletin reports the progress of the pullorum disease eradication 

 program in Massachusetts. The objective of the program is to encourage 

 poultrymen to adopt the following eradication measures: — (1) early test- 

 ing of entire flocks, (2) if infected, elimination of reactors and retesting 

 of the flock within the same season until there are no reactors, or replace- 

 ment with stock from 100 per cent tested non-reacting flocks, (3) annual 

 100 per cent testing to maintain a non-reacting flock. The data compiled 

 show an encouraging increase in the number of birds tested and in the 

 percentage of poultry population in non-reacting flocks. 



Requests for bulletins should be addressed to the 



AGRICULTURAL EXPERIMENT STATION 

 AMHERST, MASS. 



