THE FEEDING VALUE OF BOOTS 15 



the fodder usually given on the farms, consisting of a certain 

 weight of " concentrates " (i.e. corn, bran, and oil- cakes) and 

 of hay, and as much straw as the cows cared to eat. But the 

 quantity of straw consumed by each group was found by 

 weighing the quantity given and the quantity left. This 

 formed the food of one group on each farm, called C (for con- 

 centrates). Another group had the same food with an addition 

 of 36 Ibs. of mangels. This group was called M. The third 

 group had the same food as C with an addition of 36 Ibs. of 

 turnips, and was called T. On each of the two farms with 

 only two groups, one group was a C group. The other group 

 on one farm had an addition of 24 Ibs. of mangels (was an M 

 group) and on the other farm an addition of 24 Ibs. of turnips 

 (a T group). These smaller quantities of roots were given at the 

 wish of the farmers, such being the usual practice on these 

 farms. 



On one of the three farms, where the whole scheme was 

 worked, the average daily fodder per cow for the C group 

 consisted of : 



Palm kernel cake T5 Ibs. 



Rape cake 1-0 



Bran 2-0 



Crushed barley and oats 3 '5 



Clover hay 6'7 



and Straw ad lib 



The groups M and T on that farm had the same food, with 

 an addition of 36 Ibs. of mangels or turnips. 



A similar mixed food was given on the other farms. 



Before giving the average results for the different farms, it 

 will be useful to examine in detail the results for each of the 

 10 days' periods on one farm during the periods of preparation, 

 transition and experiment proper. We will take the records 

 of the yield of milk and of the percentage of fat in the milk. 

 The quantities of milk represent the average daily yield in 

 Ibs. of 10 cows, or the average yield of one cow in 10 days. 

 As the milk of each cow was weighed daily morning and evening, 

 each of the figures in the following table is the result of two 

 hundred separate weighings : 



1 Namely, 8 Ibs. daily during the first 20 days and 6 Ibs. during the last 

 40 days. 



