Figure 3. Feed Conversion Ratios and Age of Flocks al Time of Sale, 

 for one Breed, December, 1956-November, 1957 * 





* Feed conversions adjusted to eliminate trend and seasonal variation. 



conversion gets steadily less efficient over the entire length of the grow- 

 ing period. 



Mortality and Feed Conversion 



Data collected from the survey of integrated firms were not adequate 

 to evaluate the effect of mortality on feed conversion. There was no in- 

 formation on time or cause of mortality occurring in the flocks. 



Table 1. Feed Consumed, Weight in Pounds, and Feed Conversion Ratio 



for Broilers by Weeks. * 



Weeks 



Feed 

 Pounds 



1 



2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 

 10 



0.17 

 0.47 

 0.97 

 1.67 

 2.59 

 3.65 

 4.90 

 6.30 

 7.80 

 9.40 



* Department of Poultry Science, University of New Hampshire. 



8 



