THE FEEDING VALUE OF BOOTS 



group E, and 60 Ibs. of whey, being also equivalent to 5 Ibs. of 

 corn, were deducted from the food of group F. In the latter 

 periods of ten days each, when the food was increased with the 

 increased size of the pigs, the corresponding changes were made, 

 always replacing corn, milk and whey with roots in the same 

 proportion. In the last period of ten days, for instance, the 

 food supplied ;o each pig in the six groups was : 



Group 



Thus 11 Ibs. of corn, or 66 Ibs. of milk, or 132 Ibs. of whey, 

 were tested against 110 Ibs. of mangels. 



The average increase in weight during the whole time of the 

 experiment, calculated in Ibs. per pig in 10 days, should be the 

 same for group A and B, if 1 Ib. of milk and 2 Ibs. of whey have 

 the same feeding value, as the only difference in the feeding of 

 these two groups was, that A had a certain quantity of milk 

 and B double the quantity of whey. The average increases 

 for the whole time, from 10th Nov. to 29th March, were for 

 A 7'6 Ibs., for B 7*6 Ibs. Similarly for C and D, which were 

 fed alike except that C had milk and D had whey. The average 

 increases for these groups were 8*2 Ibs. for C and 8'4 for D, as 

 nearly alike as can be expected. Similarly for E and F, the 

 increases per pig in 10 days were 8'4 for E, 8*7 for F. This 

 experiment, therefore, proved that the previously established 

 result, that 1 Ib. of skim-milk and 2 Ibs. of whey have the same 

 feeding value for pigs held good also when part of the food 

 consisted of roots. 



But when we compare the effect of replacing half the corn, 

 or the corresponding quantity of milk or of whey, by mangels 

 in the proportion of 10 Ibs. of mangels to 1 Ib. of corn (or 6 Ibs. 

 of milk or 12 Ibs. of whey) it will be seen at once that 10 Ibs. of 

 mangels are more than the equivalent of these quantities of 



