XIV. 



FOODS AND FEEDING 



299 



10 and divide by 7. In this way the comparison yields, as giving the 

 best results 



all the figures referring to 1000 Ib. live weight per day. It is thus 



7 8 9 10 11 12 13 14 



Digestible non-albuminoids, expressed as starch, in Ib., "consumed per 100 Ib. 



live-weight per week. 

 FIG. 11. Sheep-feeding experiments. 



seen that sheep require more food per unit weight than cattle, but 

 make better use of their food and fatten, relatively, more rapidly. 



Relative Feeding Value of the Foods Used. From the large 

 array of figures accumulated in the course of the calculation of the 

 composition of the rations in this review of feeding trials, the writer 

 attempted to deduce the relative feeding values of a number of 

 commonly used feeding stuffs. Though the experiments were n6t 

 all designed with this object, it is probable that the deductions 

 drawn from such large numbers of experiments are fairly reliable. 



With sheep, the following table gives the average weekly gain, per 

 head, of the animals receiving a considerable quantity of the various 

 foodstuffs in their daily rations : 



