44 



On comparing Table XI. with that on page 32, it will be 

 seen that the two present lots of cows gave considerably 

 more milk than those used in the first series of experiments, 

 but the figures showing the average quantity of milk morning, 

 noon, and evening, bear much th;e same relation to one 

 another as those in Table II. There was more milk in the 

 morning than at noon and evening, and this applies to both 

 lots. The total daily yield was greater throughout in lot 

 II. than in lot I., the average for lot I. for the whole period 

 of the experiment being about 119J pints per day, and 

 for lot II. slightly over 132 pints, or a difference in favour 

 of lot II. of over 12f pints per day. The average yield per 

 cow in lot I., according to these figures, was 23'86 pints per 

 day, and in lot II., 26'43 pints. It will thus be seen that the 

 average per cow is less in both lots than it was in the pre- 

 liminary trials, but the drop in the case of lot II. is only 

 slight. During the preliminary trials, all the cows received 

 the ration generally used at Ofierton Hall, viz., about 9J Ib. 

 of concentrated food per head per day. The decrease in the 

 average yield of milk in lot I. during the period of the experi- 

 ment cannot be attributed to any difference in the quantity 

 of concentrated food supplied during the experiment and 

 that which the cows had been receiving before the experi- 

 ment commenced, for, as the rations were calculated for 

 1,200 Ib. live-weight each cow, even in lot I., would be 

 receiving actually more concentrated food during the experi- 

 ment than before. In lot II., where there was also a slight 

 decrease on the average as compared with the preliminary 

 trials, each cow received during the period of the experiment 

 over 3 Ib. more concentrated food per day than during the 

 preliminary trials, and this only caused a small increase in the 

 yield during the first two weeks. It is perhaps necessary to 

 say this much, as otherwise it might be concluded that the 

 sudden drop in the yield of lot I. in the first week of the 

 experiment was due to the cows receiving a smaller ration 

 than before. 



