THE MAINE EXPERIMENT STATION. 63 



(3.) The cost of a quart of milk, reckoning the cattle foods at 

 market prices was: Holstein, 1.83 cents; Ayrshire, 2.03 cents; 

 Jersey, 2.42 cents. The food cost of a pound of milk solids was 

 for Holstein, 7.09 cents ; Ayrshire, 7.45 cents ; Jersey, 7.44 

 cents; of a pound of butter fat, Holstein, 25.22 cents; Ayrshire, 

 26.62 cents ; Jersey, 20.43 cents. 



The average composition of the milk for the two years was : 



Solid 3-% Fat— % 



Holstein 12.22 3.47 



Ayrshire 12 . 98 3 . 67 



Jersey 15.24 5.50 



The loss of fat in the skimmed milk was least for the Jerseys. 

 Solids of skimmed milk were : Holstein, 9.50% ; Ayrshire, 

 10.40% ; Jersey, 10.50%. 



AN EXPERIMENT TO COMPARE MAINE FIELD CORN SILAGE 

 WITH SOUTHERN CORN SILAGE. 



Results : The Maine field corn silage was found to have 

 nearly Yz more digestible matter than the silage from the im- 

 mature southern corn. 



In the feeding trial, thirty pounds of the Maine field corn 

 silage produced more flesh and milk than forty pounds of the 

 southern corn silage. 



AN EXPERIMENT TO COMPARE ,A LARGE RATION OF HAY WITH 

 A MEDIUM RATION. 



The rations consisted of (1) 13 pounds hay, 25 pounds silage, 7 

 pounds grain, (2)8 pounds hay, 25 pounds silage, 7 pounds 

 grain. 



Results: The ration with the larger amount of hay proved 

 the more efficient. 



AN EXPERIMENT TO COMPARE THE FEEDING VALUE OF WHEAT 

 MEAL WITH CORN MEAL. 



Ration 1 consisted of hay, 18 pounds; wheat meal, c pounds; 

 cottonseed meal, 2 pounds; and ration 2 of hay, 18 pounds; 

 corn meal, 5 pounds ; cottonseed meal, 2 pounds. 



Result: The wheat meal in the combination was somewhat 

 more efficient than the corn meal, and at about the same price 

 can be economically substituted for it. The cows gained in 

 weight on the wheat meal ration and produced slightly more 

 milk than on the corn meal ration. 



