Massachusetts 

 Agricultural Experiment Station 



Technical Bulletin No. 12 December, 1927 



NET CORRELATIONS OF CHARACTERS 

 CONCERNED IN FECUNDITY 



By F. A. HAYS and RUBY SANBORN 



This bulletin completes the series dealing with the five inherited traits 

 concerned with fecundity in the Rhode Island Red breed of domestic fowl. 

 Net correlations are presented, which more adequately portray the relative 

 importance of the several characters than do the simple correlations pre- 

 viously used. Annual egg production is shown to be entirely independent 

 of apfe at first essi to be dependent to an important and substantially equal 

 degree upon length of winter pause, intensity as measured by winter 

 clutch size, and degree of broodiness; but to be most intimately affected 

 by annual persistency. The multiple correlation of -|-.8642 shows that 

 the five characters here considered largely control the annual egg yield. 



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AGRICULTURAL EXPERIMENT STATION 

 AMHERST, MASS. 



