40 MAINE STATE COLLEGE 



It is to the process of separation of cream that we must look 

 for an improvement in dairy methods if we wish to avoid the 

 larger wastes of butter fat, rather than to be churning. The 

 highest average loss in the butter milk for any single cow during 

 two years has been five pounds. 



Summary. 



(1.) The average amount of water-free food consumed daily 

 by the cows tested was, for each animal; Holsteins 27.4 lbs., 

 Ayrshire 24.7 lbs., Jersey 23.2 lbs. 



The weight of digestible dry matter consumed per cow. aver- 

 aged daily: Holstein 17.70 lbs., Ayrshire 15.70 lbs., Jersey 15. 

 lbs. The daily use of digestible dry matter for each 1000 lbs. 

 of live weight has been as follows: Holstein 14.30 lbs., Ayr- 

 shire 15.2 lbs., Jersey 16.8 lbs. 



(2.) It has required approximately ten pounds of dry food 

 material, or 6.6 pounds of digestible food material, to produce 

 one pound of milk solids. The averages for the three breeds 

 are nearly alike in this particular. 



(3.) The annual yield of milk solids has been: Holsteins 

 1014 lbs., Ayrshire 848 lbs., Jersey 827 lbs., or in the ratio of 

 122, 102 and 100 respectively. The annual yield of butter fat 

 has been: Holsteins 285 lbs., Ayrshire 233 lbs. , Jersey 297 lbs., 

 or in the ratio of 122, 100 and 128 respectively. 



(4.) The milk required for a pound of milk solids has been 

 as follows: Holsteins 8.3 lbs.. Ayrshire 7.8 lbs., Jersey 6.6 lbs. 

 For a pound of butter fat: Holstein 2 9. 4 lbs., Ayrshire 28.3 lbs., 

 Jersey 18.2 lbs. The weight of cream corresponding to a 

 pound of butter has been: Holstein 4.7 lbs., Ayrshire 5.0 lbs., 

 Jersey 4.1 lbs. 



A measurement of the cream in inches for six months, 

 showed the relation of cream to one pound butter to be as 

 follows: Holstein 2.24 inches, Ayrshire 2.42 inches, Jersey 

 2.03 inches. 



(5.) The food cost of a quart of milk, reckoning the cattle 

 foods at market prices has been: Holstein 1.83 cents, Ayrshire 

 2.03 cents, Jersey 2.42 cents, or in the ratio of 100: 111: 132. 

 The food cost of a pound of milk solids has been: Holstein 

 709 cents, Ayrshire 7.45 cents, Jersey 7.44 cents, or in the 

 ratio of 100: 105: 105. The food cost of a pound of butter fat 



