FEED COST OP EGG PRODUCTION". 



9 



A study of Tables 4, 4a, 4b, and 4c, and the graphic representation 

 in figure 2 shows a great variation in the proportions of the compo- 

 nents of the mash consumed, especially in the corn meal and beef 

 scrap. These percentages, if worked out on a weekly basis instead of 

 for periods of four weeks, fail to show any constant relation between 

 the percentage of either the corn meal or the beef scrap and the 

 temperature or the egg production. The proportions of the grains 

 seem to be influenced materially by the differences in years, or else 

 by different lots of feed, especially beef scrap. This is shown in 



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Fig. 2.— Hens balancing their own ration. Percentage of corn meal and beef scrap consumed in mash. 

 (Bran and middlings were before the hens also, but only small quantities were consumed.) 



the figure, where the curves for Pens 3 and 4 in 1913 are different 

 from those in 1914, and the percentages in 1915 are very markedly 

 different from those in either 1913 or 1914. 



The tendency to increase the percentage of corn meal and decrease 

 that of beef scrap during the molting period is very uniformly marked 

 in 1914 but is not so apparent in 1913. This is rather contrary to 

 the practice of increasing the percentage of protein during the molt- 

 ing period. The Leghorns ate a slightly larger proportion of beef 

 scrap than did the general-purpose fowls, which difference was 

 greater in 1913 than in 1914. The proportion of the grains eaten was 

 93905°— Bull. 561—17 2 



