A GB I CULTUI 



BLACKS&UflV-W 



MASSACHUSETTS 

 AGRICULTURAL EXPERIMENT STATION 



Bulletin No. 311 July, 1934 



Infectious Laryngotracheitis 

 Vaccination 



By Charles S. Gibbs 



The loss from infectious laryngotracheitis in poultry flocks in the State of 

 Massachusetts is a matter of much economic concern. An interest in the 

 control of this disease has resulted in field and laboratory experiments to develop 

 a satisfactory method of producing immunity through vaccination. The methods 

 and conditions under which such vaccination is practicable are here presented. 



MASSACHUSETTS STATE COLLEGE 

 AMHERST, MASS. 



