IOO FEEDING FARM ANIMALS 



age will require approximately 3.5 therms a pound 

 of gain in live weight. 



Requirements for Milk. Armsby estimates that 

 for the production of milk containing 13 per cent 

 of total solids and 4 per cent of fat approximately 

 0.3 of one therm of production value in the feed will 

 be required daily. 



Requirements for Work. The estimate below is 

 for work horses weighing 1,000 pounds. Both the 

 work and maintenance requirements are included : 



REQUIREMENTS FOR WORK HORSES (ARMSBY) 



Computing a Ration for Steers. Suppose a steer 

 weighing 1,000 pounds is to be brought to weigh 

 1,500 pounds in 250 days. This will mean an aver- 

 age daily gain of two pounds, just what in practice 

 is considered satisfactory. Our problem is to pre- 

 pare a suitable ration at reasonable cost to do this. 

 How shall we proceed? 



As a satisfactory starting point we will need to 

 determine the number of therms of energy value 

 needed for two pounds of daily increase. Taking the 

 standard, 3.5 therms for one pound of gain, this steer 

 would require 7 therms of energy value each day 

 as the fattening requirement. Taking 1,250 pounds 

 as the average weight during the feeding period, 



