DAIRY FARMING DAIRYING. 



381 



gluten meal in such quantities as to furnish 3.07 lbs. of digestible pro 

 tein, making the nutritive ratio 1:3.86. The other lot was given wheat 

 bran and corn meal in such quantities as to furnish 1.46 lbs. of digesti- 

 ble protein, making the nutritive ratio 1:9.43. During the second 

 period the rations were reversed. 



The second experiment began January 27 and continued 42 days, 

 divided into 2 equal periods. The cows were fed a basal ration of hay 

 and millet-and-soy-bean silage. In the first period one lot was fed, in 

 addition, wheat bran, Chicago gluten meal, and linseed meal, furnishing 

 2.85 lbs. of protein and making the nutritive ratio 1:4.04; while the 

 other lot was fed wheat bran and corn meal, furnishing 1.45 lbs. of pro- 

 tein and making the nutritive ration 1:8.85. In the second period the 

 rations were reversed. Composite samples of the milk of each cow were 

 taken for 5 days of each week. 



The experiments are reported in detail in tabular form, including 

 analyses of the milk and of the different feeding stuffs used. The 

 financial results are based on the following prices of feeding stuffs per 

 ton: Hay, $15; sugar beets, $5; mixed silage, $4; bran, $10 to $17; 

 gluten meal, $22 to $23; linseed meal, $22; and corn meal, $16 to $17. 

 The following table summarizes the results: 



Comparison of wide and narrow rations on coivs. 



"The above table shows that the narrow rations produced from 11.8 to 12.9 per cent 

 more milk than did the wide rations, and that they reduced the cost of production 

 from 5 to 12 per cent. . . . 



"On the narrow rations the cows produced 13.7 per cent more butter in Experi- 

 ment I and 8.3 per cent more in Experiment II than they did on the wide rations. 

 In Experiment I the cost of feed per pound of butter produced was 16.74 cts. for the 

 narrow ration and 18.41 cts. for the wide ration, showing that the narrow ration 

 produced butter for 10 per cent less per pound than did the wide ration. In Experi- 

 ment II the cost of feed per pound of butter produced was 14.57 cts. for the narrow 

 and 14.64 cts. for the wide ration, showing a difference of but 1.67 per cent in favor 

 ef the narrow ration. . . . 



"The manure from the narrow ration has 20 per cent more value than that from 

 the wide ration. The cause of the increased value lies naturally in the increased 

 amount of nitrogen present. . . . 



"While the so-called narrow rations as used in these experiments were extreme 

 ones, it might be said that narrow rations which contain from 2 to 2i lbs. of digest- 

 ible protein in a day's feed, aside from their causing a 10 per cent increase in the 



