Massachusetts 

 agricultural experiment station 



BULLETIN NO. 438 SEPTEMBER, 1946 



The Value of 



Limited Trapnesting iu 



Poultry Breeding 



By F. A. Hays 



Limited trapnesting reduces labor costs and affords a method by which breed- 

 ers may secure records on larger numbers of birds. Data reported in this study 

 indicate that safe estimates of complete performance may be made from certain 

 short-time records. 



MASSACHUSETTS STATE COLLEGE 

 AMHERST, MASS. 



