28 



Average 

 Yield 



(Pounds). 



Number of 

 Cows. 



Percentage of 

 Whole. 



Average 

 Weight. 



(Pounds). 



Dry matter re- 

 quired to pro- 

 duce : 



100 lbs. 

 Milk. 



Digestible matter 

 required to pro- 

 duce : 



I lb. 100 lbs. 

 Solids. Milk. 



I lb. 

 Solids. 



The data as above given show that the cows yielding the largest 

 amount of milk produced it with the least amount of dry and digesti- 

 ble matter. Thus the 20 cows, averaging 7809 pounds of milk 

 yearly, required 7.1 1 pounds of dry matter and 4.75 pounds of 

 digestible matter to produce one pound of milk solids ; the cows 

 yielding between 5000 and 6000 pounds required 8.24 pounds of dry 

 matter and 5.29 pounds of digestible matter ; those yielding between 

 4000 and 5000 pounds required 9.73 pounds of dry matter and 6.23 

 pounds of digestible matter. Twelve heifers with first calves averaged 

 4718 pounds of milk and required 9.80 pounds of dry matter and 

 6.28 pounds of digestible matter for each pound of milk solids 

 produced. In other words, the large producers required less food to 

 produce a definite amount of milk than the small producers. 



It is also worthy of note that of the 131 cows under 

 trial, 15 percent produced nearly 8000 pounds yearly; 35 percent 

 approximately 6500 pounds yearly ; 28 percent yielded 5554 pounds 

 yearly, and 11 percent averaged 4635 pounds per year. wSixty-three 

 percent of the cows produced between 5500 and 6500 pounds per 

 year. The cows yielding below 5000 pounds yearly one could not 

 afford to keep continuously ; those yielding between 5500 and 6500 

 represent a general average, and under most conditions should prove 



