22 N. II. Age. Experiment Station [Bulletin 265 



age production on these flocks vras 39.3%. Using average feed eon- 

 sumption and average production on these flocks, 8.71 lbs. of feed was 

 required to produce a dozen eggs. The variation in amount of feed per 

 week in the individual flocks was from 1.75 lbs. to 2. "24 lbs. 



In spite of the fact that the weekly feed consumption and weekly egg 

 production seem to fluctuate together when all the farms are grouped 

 together as indicated in Figure 3, there appears to be little relationship 

 between annual feed consumption and production when individual 

 farms are compared with each other. This is probably due to differ- 

 ences in strain of birds, in management, and in feed. 



Old Hens (Heavy Breeds) 



Tn the same way, figures on feed consumption and egg production 

 were obtained on six lots of old hens, representing an average of 647 

 birds for the year. The relationship between feed consumption and pro- 

 duction was not found materially different from that of pullets. How- 

 ever, the proportion of scratch to mash sums higher in the case of old 

 hens. 



A summary of the feed consumption and production of the individual 

 flocks is shown in Table 14. It will be noted that average feed con- 

 sumption per bird per week was slightly lower than that of pullets: 1.0 

 lhs. compared to 2. lbs. Of (his total, only 34' t was mash, as compared 

 to 40..")' '< for pullets. Production of old hens was lower. Amount of 

 feed per one dozen eggs was much higher, 12 lbs., as compared with 8.7 

 lbs. For pullets. In other words, it took 3.3 lbs. more feed to produce a 

 dozen cows from old hens. 



