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BULLETIN 21, U. S. DEPARTMENT OF AGEICULTUEE. 



Table 13. — Relative production of poultry droppings and consumption of feed per 100 



head. 



Dates. 



1911. 



Juh-lS-3l 



Aug. 1-16 



Aug.17-31 



Sept. 1-16 



Sept. 17-30 



Oct. 1-16 



Oct. 17-30 



Nov. 1^16 



Average ... 



Average 



grain daily 



per 100 



head. 



Pounds. 

 12.5 

 10.9 

 14..3 

 13.1 

 15.4 

 16.7 

 16.2 

 14.5 



Average 



manure 



(wet) daily 



per 100 



head. 



14.2 



Pounds. 

 12 

 11 

 11 

 12 

 19 

 20 

 17 

 16 



14.7 



Per cent of 



manure to 



grain. 



Per cent. 

 96.0 

 100.9 

 76.9 

 91.6 

 123.4 

 119.8 

 104.9 

 110.3 



103.5 



The figures in the table vary considerably, although it may be 

 stated that the amount of buttermilk in the feed affects the compari- 

 sons by increasing the amount of moisture in the droppings, especially 

 during hot weather. The manure when weighed was soft and wet, 

 so that the dry weight would be very much smaller. The birds eat 

 more feed as they increase in size, especially during cool weather. 



DIGESTIBLE PROTEIN AND ENERGY VALUES OF THE RATIONS. 



The protein and the energy values of the various rations used in 

 these fattening experiments show clearly the effect of thick con- 

 densed buttermilk, tallow, and oat flour in fattening. The follow- 

 ing prices of grain and milk per 100 pounds were used: Corn meal, 

 SI. 35; low-grade wheat flour, $1.35; wheat shorts, SI. 28; oat flour, 

 $2.25; condensed buttermilk, SI; and ordinary buttermilk, SO. 25. 

 Farmers' Bulletin 346, United States Department of Agriculture, 

 entitled "The Computation of Rations for Farm Animals by the Use 

 of Energy Values," was used in deriving the protein and energy 

 values of these feeds. Sixty per cent of the total feed was esti- 

 mated as buttermilk in figuring the effect of the buttermilk on the 

 energy value of the feed. 



Table 14. — Digestible protein and energy value per 100 pounds of rations used. 



Ration 

 Xo. 



Composition of rations (parts by weight). 



Digestible 

 protein. 



Energy 

 value. 



Pounds. 

 8.31 

 8.36 

 9.06 

 8.74 



Therms. 

 86.41 

 87.08 

 84.95 

 85.50 



S.72 



86.22 



19.71 



117.33 



14.26 



14.76 



114.59 

 - 100.41 



Cost, 



3 parts corn meal, 2 parts low-grade wheat flour 



3 parts corn meal, 2 parts oat flour (hulls out) 



3 part s corn meal, 2 parts low-grade wheat flour, 1 part shorts. . 



4 parts corn meal, 2 parts low-grade wheat flour, 1 part shorts. 

 2 parts corn meal, 1 part oat flour (hulls out), 1 part low-grade 



wheat flour 



100 pounds ration No. 1, with condensed buttermilk and diluted 



1 i parts with water 



100 pounds ration No. 2, with ordinary buttermilk and 6 per 



cent tallow 



100 pounds ration No. 'i, with ordinary buttermilk 



$1.35 

 1.71 

 1.34 

 1.34 



1.58 



1.95 



2.40 

 1.71 



