MASSACHUSETTS 

 AGRICULTURAL EXPERIMENT STATION 



BULLETIN NO. 442 JULY 1947 



Mortality Studies 

 in Rhode Island Reds II 



By F. A. Hays 



Mortality from all causes is one of the most important problems of poultry- 

 men. This report gives the final results of an attempt to breed lines of Rhode 

 Island Reds resistant or susceptible to mortality from all causes. 



UNIVERSITY OF MASSACHUSETTS 

 AMHERST, MASS. 



