46 



There is here again a slight advantage in favour of lot 

 II., but the difference in the general average is so small that 

 it is not in any way important. The morning milk, on the 

 average of 12 weeks, is below the standard in both lots, being 

 slightly better in lot II. than in lot I. In lot I. the evening 

 milk is the richest, while in lot II. the noon milk is, with one 

 exception, the best throughout. Taking the quality of the 

 morning milk in both lots into consideration, as well as the 

 general average composition, it is obvious that there has not 

 been any appreciable advantage from using the heavy ration, 

 when looking at the results from the milk-seller's standpoint. 

 The average gain in favour of the heavy feed only amounts 

 to '03 per cent., which is certainly not enough to justify the 

 extra cost of the food. 



If the milk had been used for butter-making, the results 

 would have been more favourable to lot II., which gave over 

 half-a-pound of butter per lot per day or about 4 Ib. per week 

 more than lot I. Whether there would have been this differ- 

 ence between the two lots in actual practice, it is impossible 

 to determine, seeing that nothing is known about the 

 respective churnability of the two milks. It is clear, however, 

 even assuming that lot II. would have given 4 Ib. per week 

 more butter than lot I., that feeding in this manner would 

 have resulted in a loss. From no point of view, therefore, has 

 the heavy ration been profitable as far as the butter-fat in the 

 milk is concerned. 



In this respect, this experiment confirms the results of 

 Experiment A, which showed a decrease in the average per- 

 centage of butter-fat from the heavy feed. The position is 

 slightly reversed in the present case, but with the same result 

 financially as before. 



Table XIII. shows the percentage of " solids not fat " in 

 the milk of the two lots. 



There was not much variation in the " solids not fat," and 

 the results here are much what might have been expected. The 

 general average for the day's milk is the same for both lots 



