314 ILLINOIS STATE DAIRYMEN'S ASSOCIATION. 



per day for 12 months, it is found that they require 5.24 acres 

 oats, 3.4 acres corn, 6.24 acres timothy and one acre pasture — 

 15.88 acres in all. When this and the 8 acres in roads and yards 

 are taken from the farm, 136.12 acres are left available for 

 dairy stock — 34.6 acres corn, 32.76 acres oats, 12.76 acres tim- 

 othy and 56 acres pasture. 



On a ration composed of the feeds available on this farm, 

 the cows will produce approximately 5000 pounds of milk each 

 year. To do this, the cows would have to produce, on the av- 

 erage, 20 pounds of milk per day during the winter six months 

 and 11 pounds of milk per day during the summer six months. 



During the 182 days from May 10, when the cows are 

 turned to pasture, to November 10, when given a full winter 

 ration in the barn, they should receive digestible nutrients as 

 follows : 



Required Nutrients for an 1100-Pound Cow Producing 11 Pounds of 



Milk Per Day. 







Protein 



Carbohydrate 



Fat 



Pounds nutrients .... 

 Pounds nutrients .... 



1 day 



182 days 



1.29 

 235. 



10.08 

 1835. 



.29 

 53. 



The pasture must be supplemented with green oats and 

 corn from about July 1 to November 10, making 130 days feed- 

 ing. Allowing 50 pounds of green oats per day for 30 days, 

 requires 1500 pounds of oats, or .1 of an acre of oats per cow, 

 and allowing 60 pounds of green corn or its equivalent per cow 

 per day for 100 days, requires 6000 pounds of green corn, or 

 .25 of an acre per cow. With this supplementary feed 56 acres 

 of pasture will support approximately 38 head of cows and al- 

 low each animal 1.47 acres. 



