Constitutional Vigor in Poultry 



583 



TABLE 5. Percentage of Egg Production by Periods 

 (December 10, 1907, to December 7, 1908) 



The fluctuation in 

 quantities of food con- 

 sumed is illustrated in 

 Fig. 163 and Table 6. 

 These amounts vary 

 more according to the 

 season of the year than 

 to the vigor of the in- 

 dividual. The greatest 

 consumption begins in 

 March and lasts through 

 April (the spring 

 months), falling off 

 rapidly during May and 

 reaching its lowest point 

 in the autumn. 

 Although the heaviest 

 egg production occurs 

 during the months of 

 March, April, May, and 

 June, the largest con- 

 sumption of food 

 slightly precedes this 

 period and decreases 

 more rapidly near the 

 end of it. 



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Fig. 1 63. — The average dry matter consumed, the average weight 

 of fowls, and the percentage of egg'production, by periods of 

 twenty-eight days each 



