FEEDING OF WORKING ANIMALS 277 



animal of that weight performing daily two million 

 metrekilograms of work would need to get 7-05 kg. 

 starch equivalent. As i kg. starch equivalent equals 

 533 mkg. work, two millions mkg. would use 

 3-75 kg. starch equivalent, to which must be added 

 3-3 kg. for maintenance (see above), making the 

 total 7-05 kg. The following figures show what 

 is the daily work of a horse working eight hours a 

 day and at a rate of 4 km. per hour. 



Live weight, kg. . . 300 400 500 600 700 



Draught energy, kg. 45 56 67 78 89 



Daily work expressed 1 T< _ QQ 



in millions of mkg. I 1 '44 I>8 2<l6 2> * 2 2 ' 8 



For the above work the following starch equiva- 

 lents in kg. are necessary : 



For the work . . 2-70 3-38 4-05 4-73 5-40 

 For the maintenance 1 

 of the animal . J 2 '35 2 ' 8 4 3'3Q 373 4-13 



5-05 6-22 7-35 8-46 9-53 



Light horses perform slightly more work in pro- 

 portion to their weight than do heavy ones, for a 

 300 kg. animal will do for an average day's work 

 4-80 million mkg. per 1000 kg. live weight, whilst 

 a 700 kg. horse will only do 4-11 million mkg. 

 With the food it is the opposite, for each one million 

 mkg. requires a starch equivalent of 3-51 in the 

 case of the horse weighing 300 kg., whilst for the 

 700 kg. horse only 3-31 kg. are necessary. It is 

 on the above facts that the feeding standards for 



