58o 



Bulletin 318 



Similarly, the consumption of grit and oyster shell was proportionate 

 to the consumption of other foods and to the production of eggs. The 

 flock consuming the largest amount of ground feed and laying the largest 

 number of eggs ate the greatest proportion of grit and oyster shell, and 

 vice versa. In all cases the consumption of oyster shell was greater than 

 that of grit. 



The consumption of oyster shell varied according to the egg production. 

 The number of pounds of eggs produced averaged very nearly the same 

 for every pound of oyster shell consumed in each pen. The hens that 

 laid the largest number of eggs ate the greatest amount of shell. The 

 consumption of grit was in much the same ratio to the egg production, 

 but varied in different pens more than did that of the oyster shell. 



The ratio of protein to carbohydrates and fat was about the same for 

 all pens. Whatever variation there was is due to the relative consump- 

 tion of whole grain, as compared to that of ground feed with which 

 meat scrap was mixed. (Table 2.) 



TABLE 2. Total Food Nutrients (in Pounds)* 

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



Summer 

 selected 



White 

 Leghorns 



Fall selected 



Strong 



Weak 



White 

 Leghorns 



Strong I Weak 



Barred 



Plymouth 



Rocks 



Strong 



Weak 



True average 



Strong Weak 



Difference 



Strong Weak 



Pen. 



78 



79 



76 



7S 



23 



Dry matter 



Ash (including grit and 

 shell) 



Protein 



Carbohydrates 



Fat 



Ratio of protein to carbo- 

 hydrates and fat 



63.66 



6. IS 



9-47 



41-75 



2.70 



5-05 



71.61 



7.50 

 10.77 

 46.61 



3.02' 



4.96 



67.43 



43 46 

 2.72 



S-43 



58.33 



3-90 



7.47 



39 98 



2.32 



6.05 



81.991 78.08 



7-35 

 11.66 

 54-52 



3-33 



S-31 



5.95 

 10. 75 

 52-49 



3-I3 



5-53 



71.01 



6.25 

 10.09 

 46-58 



2.91 



5-26 



69.87 



46.68 

 2.84 



5-45 



1. 14 



0.42 

 0.35 



0.07 



o. 10 



o. 19 



* The analyses used in computing the tables on 



Food 



Com 



Wheat 



Oats 



Buckwheat 



Com meal 



Wheat bran 



Wheat middlings. 



Oil meal 



Alfalfa meal 



Meat scrap 



Blood meal 



Beets 



Cabbage 



Turnips 



Green bone 



Oyster shell 



Grit 



Sprouted oats. . . . 



