Massachusetts 

 Agricultural Experiment Station 



TECHNICAL BULLETIN No. 8 JULY, 1926 



WINTER CYCLE AND WINTER PAUSE 



IN RELATION TO 



WINTER AND ANNUAL EGG PRODUCTION 



By F. A. HAYS and RUBY SANBORN 



In this bulletin are reported the results of a statistical study of winter 

 cycle and winter pause records taken over a period of nine years, with as 

 many separate flocks. The records show that winter cycle furnishes a sig- 

 nificant short-time measure of probable annual egg production in the flock. 

 Winter pause is shown to be a potent cause of lowered annual egg produc- 

 tion; and any increase in length of pause is but partially compensated for 

 by later increased activity in egg production. 



Requests for bulletins should be addressed to the 



AGRICULTURAL EXPERIMENT STATION 

 AMHERST, MASS. 



