56 MARKET DAIRYING 



H. Most of the standard makes of separators will do 

 satisfactory work when delivering cream of a richness of 

 50%. A richer cream is liable to result in a richer skim- 

 milk. The reason for this is that in rich cream the skim- 

 milk is .taken close to the cream line where the skim-milk 

 is richest. 



I. Owing to the very small size of the fat globules 

 in stripper's milk, such milk is more difficult to cream 

 than that produced in the early period of lactation. 



Regulating Richness of Cream. The richness of 

 cream is regulated by means of a cream screw in the sepa- 

 rator bowl. When a rich cream is desired the screw is 

 turned toward the center of the bowl, and for a thin cream 

 it is turned away from the center. 



Best Time to Separate Millc. The best results with 

 a separator are obtained by running the milk through 

 the machine immediately after milking. 



Saving of Butterfat With a Separator. That the 

 owner of four good cows can afford to invest $50.00 in a 

 small cream separator is shown by the following: Four 

 goods cows will yield not less than 24,000 pounds of 

 milk a year. By the common shallow pan method of 

 creaming, the loss of butterfat will average 0.7 pound 

 for every 100 pounds of milk. With the centrifugal sepa- 

 rator the loss of fat will not average over 0.05 pound, 

 hence there will be effected a saving of 0.65 pound of 

 butterfat in each 100 pounds of milk by the use of the 

 separator. At this rate, the total saving of butterfat an- 

 nually on the 24,000 pounds of milk will be 156 pounds. 

 Since each pound of butterfat will yield approximately 

 I 1-6 pounds of butter, 183 pounds of butter will be 

 saved by the process, which, at 25 cents per pound, 



