CHAPTER XXVI. 



PUBLIC TESTS OF PTJKE-BKED DAIRY COWS FEED RE- 

 QUIRED BY COW COST OF PRODUCING 

 MILK AND FAT. 



683. Exposition breed tests. Tests of pure-bred cows of various 

 breeds for the production of milk and butter fat were conducted at 

 the World's Columbian Exposition held in Chicago in 1893; at the 

 Pan-American Exposition held in Buffalo in 1901 ; and at the Louisi- 

 ana-Purchase Exposition held in St. Louis in 1904. In each case the 

 test was supervised by a joint committee composed of delegates rep- 

 resenting, on the one hand, the various breed associations interested, 

 and on the other the Association of American Agricultural Colleges 

 and Experiment Stations. The representatives of the several breed 

 associations had direct and full charge of the cows and their feed 

 and care in all particulars. The representatives of the colleges and 

 stations took charge of all weighings of feed as well as of milk and 

 conducted all analyses of the milk. 



From the vast accumulation of data gathered during these tests 

 the following condensed table is compiled, giving some of the more 

 striking and helpful findings. The data for the Columbian Exposi- 

 tion test is taken from the Jersey Bulletin, 1893, and the Journal of 

 the British Dairy Farmers' 1 Association, 1894; for the Pan-American 

 test, from the Hoist ein-Friesian Register, October, 1901 ; and for the 

 Louisiana-Purchase Exposition, from the Dairy Cow Demonstration 

 of the Louisiana-Purchase Exposition, Farrington, published by 

 Hoard's Dairyman. 



In these competitive tests the cows were selected and entered by 

 the several breed associations, there being no restrictions as to choice 

 in this matter. The chosen specimens of each breed were managed 

 as to feed, water, and care entirely in accordance with the ideas and 

 wishes of the committee in charge of that particular breed. The 

 feeding and milking of each cow, however, was done in the presence 

 of representatives of the colleges and experiment stations assisting in 

 the test. Before each test was begun a price was established for each 

 and all kinds of feed by the joint committee. The sub-committee in 

 charge of each competing herd was allowed to give as much of any 



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