CHAPTER XV 



DAIRY ARITHMETIC 



The Farm 



I dairy farm = 80 acres of cleared land 



80 acres of cleared land = 20 acres hay = 30 tons hay 



= 10 acres corn = 100 tons ensilage 



= 40 acres pasture = 40 tons green feed 



= 10 acres other crops 



The above farm 

 will support 



Or 



Or 



The Cows 



20 extra cows, using 40 per 

 cent of their feed for body 

 building, and 60 per cent 

 for milk 



27 fair cows, using 50 per 

 cent of their feed for body 

 building, and 50 per cent 

 for milk 



35 poor cows, using 60 per 

 cent of their feed for body 

 building, and 40 per cent 

 for milk 



producing 8500 Ib. 

 milk per year 

 each. 



producing 5500 Ib. 

 milk per year 

 each. 



producing 3000 Ib. 

 milk per year 

 each. 



With hay at $15.00 per ton on the farm, ensilage 

 and green feed at $5.00 per ton, and grain at 



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