FEEDING AXD FATTENING 



303 



The Iowa experiment station conducted, in 1897. 

 feeding- experiments from birth with cHtferent lots of 

 Berkshire, Tamworth, Chester \\'hite, Poland-China, 

 Duroc-Jersey and Yorkshire pigs, which were slaughtered 

 in tlie Chicago packing house of Swift & CfMupany. 

 Eight carcasses, representing as many lots, were shipped 

 to Washington for investigation as to chemical composi- 

 tion In- the Di\-ision of Ciiemistrv of the United States 

 Department of Agriculture. 'I'lie blood, hair, entrails, 

 heads, kidneys and kidney fats were not shipped, but the 

 analyses represented practically the composition of the 

 hog as put in"o commerce for food. The data obtained 

 are given in the following table, in which Xo. 5 was a 

 Duroc-Jersey from a lot fed on a narrow ration, and No. 

 (1 was from a lot fed on a wide ration: 



AN.\LYTICAL DATA. EXPRESSED IN PERCENTAGES, OF THE 

 ENTIRE DRESSED ANIMAL. THE HEAD, LEAF LARD 

 AND KIDNEYS HAVING BEEN REMOVED 



The methods and results of the foregoing experiment 

 are detailed fully in Bulletin No. 48. page 381, of the 

 Iowa experiment station, and in "Chemical Composition 



