248 DAIRY FARMING 



about one cent for gluten meal. From these values it is 

 safe to assume an average of five-eighths cent per pound 

 which gives the 800 pounds of concentrates a manurial 

 value of $5.00. Since milk has a manurial value of about 

 10 cents per 100 pounds, the manurial value of the 2,500 

 pounds of milk is $2.50, which leaves $2.50 as the value 

 of manurial constituents that actually enter into the 

 manure for each 2,500 pounds of milk, or each 100 

 pounds of butter fat, produced. For each 100 pounds of 

 butter fat produced, therefore, $2.50 is added to $15 

 which is the estimated value of the manure from feed 

 required. for maintenance. 



The value of the manure from cows of different pro- 

 ductive capacities, as obtained in the above calculation, is 

 based upon the assumption that all of the manure is saved. 

 Unfortunately, however, many dairymen allow one-half or 

 more of it to go to waste, but such carelessness on the 

 part of dairymen should not be charged against the cow. 



While the value of the manure has been based solely 

 upon its content of nitrogen, phosphoric acid and potash, 

 manure has values outside of these ingredients. Its me- 

 chanical effect upon the soil through the humus it sup- 

 plies, as well as the beneficial effects of the hosts of 

 bacteria it contains, should not be underrated. 



Value of Cow for Beef. The final value of a cow to 

 the butcher may be placed at $24. Since the cow may be 

 milked on an average eight years, one-eighth of the $24, 

 or $3, should be credited to her annual receipts. 



Cost of Feed. On arriving at the cost of feed, it is 

 to be remembered that one and one-half acres of land is 

 allotted to each cow. This land, valued at $80 per acre, 

 will undoubtedly furnish enough pasture and other rough 



