318 ILLINOIS STATE DAIRYMEN'S ASSOCIATION. 



SYSTEM NO. 2, 43 Cows, 1475 POUNDS MILK PER ACRE. 



The rotation and crops raised in this system are corn, corn, 

 corn, oats, clover, clover and timothy, pasture, pasture, with 57 

 acres of corn, 19 acres each of oats, clover, clover and timothy, 

 and 38 acres of pasture. The feed per horse is exactly the same 

 as in System No. i, except that only 1.17 acres of clover and tim- 

 othy are needed; the five horses consume the crops from 17.90 

 acres, and there remains available for dairy stock 52.75 acres 

 corn, 12.45 acres oats, 19 acres clover, 13.15 acres clover and 

 timothy, and 36.75 acres pasture. 



Cows that would produce 6000 pounds of milk on a ration 

 composed of corn silage and legume hay with grain, would not 

 produce over 5500 pounds on the feed available on this farm ; 

 During the summer six months, or 182 days, from May 10 to 

 November 10, the cows would have to produce, on the average, 

 12 pounds of milk per day for 122 days, allowing 60 days to 

 be dry. 



During this time they should receive digestible nutrients 

 as follows: 



Required Nutrients for an 1100-Pound Cow Producing 12 Pounds of 



Milk Per Day. 







Protein 



Carbohy- 

 drate 



Fat 



Pounds nutirients 



Pounds nutrients 



1 day 



182 days 



1.33 

 242. 



10.29 

 1873. 



.30 

 55. 



The pasture must be supplemented with green oats and 

 corn from about July 1 to November 10 — 70 pounds of green 

 oats per cow per day for 30 days, and 70 pounds of green corn 

 or its equivalent per cow per day for 100 days. With this sup- 

 plementary feed 36.75 acres of pasture will support approxi- 

 mately 51 head of cows and allow each animal .72 of an acre 

 of pasture. 



