/ ' ' 



Massachusetts 

 agricultural experiment station 



'ilh" ^ 19/15 



Bulletin No. 423 December, 1944 



Factors Affecting 

 Annual Egg Production 



By F. A. Hays 



Modern methods of poultry breeding are based on specific charactars that 

 affect egg production. This study was undertaken for the purpose of developing 

 more accurate methods of selecting birds for breeding purposes where the primary 

 objective is increased egg production. 



MASSACHUSETTS STATE COLLEGE 

 AMHERST, MASS. 



