THIRTY-SEVENTH ANNUAL CONVENTION. 313 



be done so conveniently, more horses than here figured will be 

 required. 



Horses Required for Each System. 



Four 1300-pound horses will be required in System No. 1 ; 

 five in System No. 2 ; five in System No. 3 ; and six in System 

 No. 4; and a certain amount of land will be needed in each 

 case to support the horses. In the first three systems an al- 

 lowance of one- fourth of an acre of pasture is made for each 

 horse. The horses are all fed grain io^4 months and roughing 

 12 months in the year — 15 pounds of grain and 13 pounds of 

 hay per house per day. 



How Many Cows Can Be Kept; Their Rations. 



To determine the number of cows that can be kept on the 

 farm under each of the separate systems, the first step is to 

 know the amount and kind of rations needed and the length of 

 time each should be fed. Under ordinary conditions cows give 

 a greater yield of milk per year when freshening in the fall, 

 and the management of the herds under all these systems of 

 cropping is based upon cows freshening at this season of the 

 year. The winter rations are therefore figured for the first 

 portion of the lactation period. If some cows freshen in the 

 spring, a portion of the grain here allowed for the winter ration 

 of such cows will not be needed at that time and can be fed 

 during the summer, as those freshening in the spring will be 

 giving less milk during the winter. 



SYSTEM NO. 1, 32 COWS, 991 POUNDS OF MILK PER ACRE. 



System No. i is an eight-year rotation of corn, oats, corn, 

 oats, timothy, pasture, pasture, pasture, with 38 acres each of 

 corn and oats, 19 acres of timothy and 57 acres of pasture. 



Feeding each of the four horses 6 2-3 pounds of oats and 

 8 1-3 pounds of corn for 10^2 months, and 13 pounds of hay 



