314 



PRINCIPLES OF FEEDING FARM ANIMALS 



Table 26. — Relation of Weight of Uons to Efficiency of 



Gains 



As shown by the table, production became less efficient 

 as the pigs became heavier and, presumably, older. Similar 

 results are shown in a compilation of cattle feeding trials 

 made by the author. The average of 33 feeding trials with 

 2-year-old steers showed a net energy consumption of 9.1 

 therms for every pound of gain, while the average of 4 feed- 

 ing trials with calves and yearUngs showed a net energy 

 consumption of 6.3 therms for every pound of gain. 



Armsby ^ presents the following figures as representing 

 the amounts of net energy above maintenance to produce 

 a pound of gain in cattle. 



U. S. Dept. of Agr. Farmers' BuL 346. 



