1 86 ELEMENTARY TREATISE ON STOCK FEEDS AND FEEDING 



doing medium work, weighing 1,200 Ibs. computed from timothy 

 hay, oats, corn and wheat bran would be calculated as follows. 

 Table V gives maintenance and work requirement for a horse 

 doing medium work weighing 1,000 Ibs. as, 



Digestible protein 1.4 pounds 



Energy value 12.4 therms 



As our horse weighs 1,200 Ibs. we must increase this require- 

 ment one-fifth, since 200 is one-fifth of 1,000. 



ve weight 

 pounds 



1,000 

 200 



Digestible protein 

 pounds 



1.4 



0.28 



1.68 



Energy value 

 therms 



12.4 

 2.48 



14.88 



Requirement 1,200 



We must aim to allow a limited amount of roughage to a 

 horse because this class of animal is not capable of consuming 

 large amounts of this kind of feed stuff. The following ration 

 approximates the requirement. 



Rations for Fattening Cattle. In computing rations for fatten- 

 ing cattle the maintenance requirement should be added to the 

 average gain in live weight per day. Example: A farmer has 

 a bunch of cattle weighing 1,000 Ibs. which he wishes to fatten 

 for the market. These cattle should make an average gain of 

 2 Ibs. a day and weigh about 1,500 Ibs. when ready for sale. 



According to Table V, I pound gain in live weight for fattening 

 cattle requires 3.5 therms of energy value. The cattle gain 2 Ibs. 

 a day, hence (2 X 3-5) = 7 therms, or the requirement of energy 

 value. The maintenance should be calculated on the average live 

 weight of the cattle for the period, namely 1,250 Ibs. 



