23 



Summairy 



The results of tlie 1929-30 season show tliat the mmiher of tested flocks 

 and the number of tested birds are steadily increasing. The average percent- 

 age of infection was reduced and the number of non-reacting 100 per cent 

 tested flocks was increased. No reactors were detected among the 584 tested 

 fowls other than chickens. Intermittent testing was not as effective in eradi- 

 cation as testing the entire flock each year. Early pullet testing was found 

 practical and expedited the elimination of infection from premises. Sexual 

 maturity of pullets did not appear to play a role in eradicating the disease. 

 Infection was eliminated from many flocks within the season through intens- 

 ive testing. 



Publication of this Document Approved by the Commission on Administration 

 AND Finance. 

 3500-5-'30. No. 9158. 



