NON-BROODY AND INTENSE BROODY LINES 



The conclusion seems justified, therefore, that degree of broodiness measured by 

 number of broody periods in the first laying year behav-es very definitely as an 

 inherited character. The mole of inheritance has not been worked out as yet. 



Table 8. Degree of Broodiness in Daughters from Different Classes 



OF Dams. 



9. Laying House Mortality 



Low mortality in the laying house is highly desirable from every standpoint. 

 In Table 9 the percentage of females that died during their first laying year is 

 recorded yearly in the non-broody and broody lines. The two lines do not show a 

 significant difference in mortality. Considering the small number of birds used, 

 the mortality rates in the two lines tended to be similar in the same j'ear. The 

 means of the two lines for the entire experimental period are almost identical. The 

 data in Table 9 furnish no evidence of any relation between mortality rate in the 

 laying house and the presence or absence of broodiness. 



Table 9. Laying House Mortality in Non-Broody and Broody Lines. 



10. Winter Egg Production 



Winter egg production includes the number of eggs laid by each individual from 

 her first pullet egg up to March first. There is an intimate correlation +.6214 

 + .0142 between winter production and annual production in Rhode Island Reds 

 (Hays, Sanborn and James, 1924). Table 10 records the mean winter egg produc- 

 tion in the two lines throughout the experiment. 



