Feeding Standards. 



245 



animal requires relatively less for maintenance, and to the addi- 

 tional fact that the rate of growth has greatly decreased. Armsby 

 allows 1.75 pounds of digestible protein for a steer weighing 

 1000 pounds, while but 1.65 is required when the same steer 

 reaches 1100 pounds. This is due to the lessened increase in 

 muscular tissue and consequently decreased demand for protein 

 food, as compared with the earlier stages of life. It should be 

 noted that in comparing maintenance and growing requirements, 

 the larger part o all the food consumed is used for body support, 

 and that additional requirements for growth are mainly in pro- 

 tein, rather than therm requirements. 



Armsby's Standards for Growing Cattle and Sheep. 



Standards for milch cows and fattening steers. In addition 

 to the foregoing standards, Armsby recommends the following : 



1. For milk production add to the maintenance standard 0.05 

 pound of digestible protein and 0.3 therm for each pound of 

 average milk containing 13 per cent of total solids and 4 per cent 

 of fat. 



2. For fairly mature fattening cattle add 3.5 therms to the 

 maintenance standard for each pound of gain in live weight. 



Armsby does not provide additional protein to the maintenance 

 standard for fattening steers, holding that if the proper allow- 



