RELATION OF FOOD TO PRODUCTION 



421 



various species of animals in maintaining hxraian life. 

 The som-ces of all these figures are not given, for they 

 are so numerous as to make this difficult. 



It is true, in general, that prices are proportional to 

 the cost of production. If, therefore, natural resources 

 are to be utilized for hmnan sustenance in the most 

 efficient way and the cost of living brought to the lowest 

 possible point, the raw materials of the farm should be 

 applied to the production of those animal foods that are 

 most cheaply grown. 



The time will probably come when the relation of 

 population to land areas will be such as to make necessary 

 an application of food economics along this line. 



Tabii: LXXXVIII. Pboduction by Fabm Animals. Proportions 

 OF Carcass and Edible Substance 



Number 



of 

 animals 



Carcass 



in per cent 



of live 



weight 



Per cent* 



of edible 



dry matter 



in carcasfe 



Per cent of 

 edible diy 

 matter in 

 live animal 



Steers, general average 



Steers, Iowa 



Steers, Kansas . . 

 Steers, Mainet . 



Sheep 



Lambs . . . 



Lambs, Iowa 



Swine, general average 



Pigs, Iowa 



Calves . . . 

 Fowl, large 

 Fowl, small . . . 

 Chickens, broilers 



97 



5 



5 



8 



4 



44 



133 



97 



56 



23 



12 



7 



107 



34§ 



61.4 



64. 



61.4 



57.7 



50.7 



50.7 



54. 



81.2 



77.9 



57.2 



80.8 



78. 



82.lt 



88.811 



33.2 



33.2 



33.2 



32.3 



37.4 



33.7 



33.7 



62.7 



62.7 



22.2 



27. 



27. 



14.7 



26.3 



20.4 



21.2 



20.4 



18.6 



19. 



17.1 



18.2 



50.9 



48.8 



12.7 



21.8 



21.1 



12.1 



23.3*' 



* From Bull. No. 28, Office of Experiment Stations. Revised edition, 

 t Grown from calfhood, entire bodies analyzed. 

 t Not drawn. 

 § Number of samples. 

 II Per cent after removing shells. 

 **In eggs with shells. 



