638 



Feedg and Feeding. 



by the attendant. After considerable experimenting it was found 

 that the best way to obtain a sample was to allow the pigs to partly 

 empty the udder, when one was gently pushed aside by the at- 

 tendant, who quickly drew what milk he could before the dam 

 was aware of the operation. Even after the attendant had be- 

 come familiar with the difficulties and learned the best method 

 of proceeding, only about 30 cc, or one fluid ounce of milk, 

 could be obtained as the result of half a dozen efforts. From the 

 four sows nine samples of milk were secured, which were analyzed 

 with the results given below: 



828. What the table shows. — From the table we learn that the 

 fat in the milk under examination ranged from a little less than 4 

 to over 16 per cent. The data for average composition show 

 that sow's milk is richer in all components than cow's milk, this 

 being especially true in regard to fat and sugar. On the avei*age 

 these sows yielded about one-third of a pound of fat each, daily. 

 The microscopical examination showed that the fat globules in 

 the milk of these sows were very minute, averaging only one- 

 quarter the size of those in cow's milk. On the other hand, the 

 number of globules in a given volume of sow's milk was about 

 eight times as many as are found in cow's milk. (616) 



