158 



The StarcJi H(iiiir(tl( nt TIikii-ji 



been made by Wood and Viile in discarding this assumption. They 

 determined the variation in the rei|iiirements of oxen of different sizes 

 by means of a diaj^jram, which by their kind permission is rejjroduced 

 bolow 



1800 



6 6 7 8 9 10 



lbs. starch equivalent per head per day 

 rcqiiirrd for- mainlcnaiu-o 



Reduced to nunierical terms, thi.s frrapli wvAy be e.vpressed by tlie 

 fnrinula : 



k)gi?= flogil/ - 1-1 97-23, 



M is the live weight (lb.) of the animal and E is the amount (lb.) of 

 starch equivalent required for maintenance. 



The concordance between the graph and the formula is shown below : 

 M 



E (graph) 

 E (formula) 



