FEED COST OF EGG PRODUCTION. 



39 



and one which is supposed to represent a fattening ration, but the 

 birds gained less in weight and were thinner throughout the year in 

 this pen than in any of the other general-purpose pens (see Table 10). 

 This ration, however, was deficient in animal protein. The hens 

 increased more in weight and were fatter in Pen 6 than in any other 

 pen, although the nutritive ratio was lower in this pen than in several 

 of the other general-purpose pens. However, with similar methods 

 of feeding and normal rations, the wider nutritive ratios represent 

 the most fattening rations. A nutritive ratio of about 1 to 4.5 has 

 given good results in all of these experiments, although satisfactory 

 results were secured on rations having widely varying ratios. 



The digestible nutrients in 100 pounds of the various feeds used 

 are shown in Table 12, while Table 13 shows these digestible nutrients 

 in 100 pounds of the actual feed or ration given to each pen during 

 these experiments. The digestibility of the feeds in these tables 

 is based on experiments conducted with farm animals, as no figures 

 of this nature are available on poultry. 



Table 12. — Digestible nutrients in 100 pounds of feeds used. 



Feed. 



Crude 

 protein. 



Carbo- 

 hydrates. 



Fat. 



Feed. 



Crude 

 protein. 



Carbo- 

 hydrates. 



Fat. 



Wheat 



Pounds. 



8.8 

 8.8 

 7.8 

 8.4 

 6.1 



Pounds. 

 67.5 

 49.2 

 66.8 

 65.3 

 64.3 



Pounds. 

 1.5 

 4.3 

 4.3 

 1.6 

 3.5 



Wheat bran 



Wheat middlings . . 

 Beef scrap 



Pounds. 

 11.9 

 13.0 

 66.2 

 37.6 

 60.5 



Pounds. 

 42.0 



45.7 



Pounds. 

 2.5 



Oats 



4.5 





13.4 





Cottonseed meal 



21.4 



9.6 





14 6 











Table 13. — Digestible nutrients in 100 pounds of feed consumed. 



Pen. 



Year. 



Crude 

 protein. 



Carbohy- 

 drates. 



Fat. 



Nutri- 

 tive 

 ratio. 



Pen. 



Year. 



Crude 

 protein. 



Carbohy- 

 drates. 



Fat. 



Nutri- 

 tive 

 ratio. 







Pounds. 



Pounds. 



Pounds. 









Pounds. 



Pounds. 



Pounds. 





1 



1913 



14.1 



53.1 



4.3 



1 :4.5 



6 



1913 



13.4 



56.4 



3.9 



1 :4.8 





1914 



15.4 



51.0 



4.5 



1:4.0 





1914 



13.1 



56.0 



3.9 



1 :4.9 





1915 



17.1 



.48.3 



4.8 



1 :3.4 





1915 



11.2 



57.8 



3.6 



1 :5.9 



2 



1913 



12.1 



60.1 



3.6 



1 :5.6 



7 



1914 



13.9 



55.0 



4.4 



1 :4.7 





1914 



15.0 



64.3 



4.2 



1 :4.3 





1915 



10.6 



58.9 



4.0 



1 :6.4 





1915 



16.8 



51.5 



4.5 



1 :3.7 



























8 



1914 



14.4 



54.6 



4.5 



1 :4.5 



3 



1913 

 1914 



12.1 

 12.9 



56.6 



55.8 



4.1 

 4.3 



1:5.5 

 1:5.1 





1915 



15.1 



53.7 



4.6 



1 :4.2 





1915 



9.8 



59.3 



3.8 



1 :6.9 



9 



1914 

 1915 



8.5 

 8.8 



58.4 

 57.6 



3.4 

 3.3 



1 :7.7 

 1 :7.4 



4 



1913 



13.2 



55.9 



4.3 



1 :5.0 

















1914 



13.5 



55.3 



4.4 



1 :4.8 



10 



1915 



12.6 



53.1 



4.1 



1 :4.9 





1915 



8.9 



60.7 



3.7 



1 :7.7 



11 



1915 



13.5 



52.1 



4.3 



1 : 4. 6 















12 



1915 



15.6 



53.2 



4.7 



1 : 4. 1 



5 



1913 



12.5 



56.0 



4.2 



1 :5.2 



13 



1915 



14.0 



52.2 



4.5 



1 :4.5 





1914 



13.8 



54.4 



4.4 



1 :4.7 



14 



1915 



15.1 



51.4 



4.5 



1 : 4. 1 





1915 



14.3 



53.8 



4.5 



1 :4.5 



15 



1915 



13.2 



51.9 



4.2 



1:4.6 















16 



1915 



12.0 



55.1 



4.0 



1 :5.4 



