378 POULTRY PRODUCTION 



whatever purpose, must be governed by the judgment of 

 the feeder, based on the size and disposition of the fowls 

 and the amount of feed they are picking up about the farm. 



As a basis for estimating production costs or for purchasing 

 feeds the following records will be found useful. 



Gowell reports that the amount of feed consumed per hen 

 in twelve months by a flock of Barred Plymouth Rocks 

 averaging 144 eggs each was: 



Grain and mash 90 . pounds 



Oyster shell . 4.0 



Dry cracked bone . 2.4 



Grit . 2.0 



Charcoal . . .2.4 



Clover . . . . 10.0 



He further reports, that 2000 pullets of the same breed 

 were raised to laying age with an average consumption of: 



28 pounds of grain and mash 

 i " granulated bone 



i " oyster shell 



2} " grit 



i " charcoal 



Philips^ reports that Leghorn pullets averaging 135 eggs 

 consumed between 70 and 75 pounds of feed per bird per 

 year. In detail the consumption was: 



Corn 13.420 pounds 



Wheat 17 . 110 



Oats 11.255 



Bran 8.505 



Shorts . 8.505 



Oil meal .301 



Grit . . 2.550 



Oyster shell 1.550 



Meat scrap 7 . 100 " 



70.296 



This gives an average feed consumption per dozen eggs 

 laid of 4.105 pounds, or a dry matter consumption of 3.7 

 pounds. 



At the third annual international egg-laying contest 

 Kirkpatrick and Card^ found that the average feed consump- 



1 Purdue Bulletin No. 182 

 * Starrs Bulletin No. 82 



