140 SWINE 



dred pounds live weight that the best results can be 

 obtained. 



WORK OF EXPERIMENT STATIONS. 



The experiment stations of the world, and especially 

 those of the United States, have done a great deal of work 

 along the line of swine feeding. The major part of this 

 work has been in the nature of short feeding trials to test 

 the value of different feeds and different rations. Con- 

 siderable of this work also was directed along the lines 

 of the analysis of feed stuffs and to determine the coeffi- 

 cients of digestibility for the feeds. In the main, the re- 

 sults of this work as a whole are good, but very often 

 such results are greatly influenced by the conditions un- 

 der which they were determined. In such cases, if they 

 are to be used correctly, they must be properly inter- 

 preted. A few examples may be cited in this connection 

 as follows: 



The American experiment stations have determined 

 that skim milk has a value that is considerably greater 

 than was determined by Danish experiments. In the 

 American experiments 4^75 pounds of skim milk is equal 

 to 1 pound of grain, while in the Danish experiments it 

 requires 6 pounds of skim milk to equal 1 pound of grain. 

 The question naturally arises, Is there any difference in 

 the skim milk of different countries when it has been ob- 

 tained by similar processes, namely, by centrifugal means 

 of separation? By studying the data from which these 

 results were obtained it is seen that in the American ex- 

 periments the skim milk was usually fed as a supplement 

 to corn, while in the Danish experiments small grains, 

 such as rye and barley, were used. 



