Massachusetts 

 agricultural experiment station 



CONTROL SERIES BULLETIN NO. 141 JULY, 1949 



Twenty-niDth Annual Report of 



PuUorum Disease Eradication 



in Massachusetts 



By the Poultry Disease Control Laboratory 



During the 1948-49 testing season 569 chicken, turkey, and pheasant flocks 

 were tested. A total of 1,241,500 samples was tested, of which only 0.04 percent 

 were positive. This is the lowest percentage of positive tests for the twenty- 

 nine years of testing. The percentage (1.55) of puUorum "breaks" in the nega- 

 tive flocks was the lowest for the past 10 years. Furthermore 99.1 percent of 

 all the birds tested were located in 100 percent tested, non-reacting flocks. 

 Massachusetts flock owners are to be complimented on the progress that is 

 being made in establishing and maintaining pullorum-free flocks. 



UNIVERSITY OF MASSACHUSETTS 

 AMHERST, MASS.. 



