A STUDY IN THE COST OP PRODUCING MILK. 



15 



than for dairy products on these farms range from $12.27 to $20.33 

 per cow and will offset from 25 to 30 per cent of all costs other than 

 feed. (See fig. 3.) 



Table IX. — Items of credit other than milk, their annual value per cow, and their relation 

 to cost other than feed on the four farms. 



Item. 



Wisconsin 

 farm. 



Michigan 

 farm. 



Pennsyl- 

 vania 

 farm. 



North 



Carolina 



farm. 



Manure . 



$10. 47 



4.75 



.11 



.05 



$15. 42 



4.52 



.08 



$10. 27 

 1.16 



$10. 64 



Calves ■ 



4.16 



Hides 



.26 



Bull service . 





.53 



Feed sacks 



.30 







Prfimiiims, 





.84 



1.22 











Total 



15.38 



20.32 



12.27 



16.81 







Per cent of costs other than feed 



29.3 



28.7 



24.8 



27.2 







Table IX gives these credits for the four farms, their amount per 

 cow, and the relation which they bear to the costs other than feed. 

 (See Table I.) 



Fig. 3. — Relation between the credits other than milk and the total cost of keeping a cow on each of the 



four farms. 



VALUE OF MANURE. 



Manure is the most important credit. This was valued at $15 

 per head per year for the Michigan farm and $10 per head on each 

 of the others. The value of manure produced by the herd bulls was 

 credited to the cows, which accounts for the increase in the figures 

 given in Table IX. The higher rate per cow on the Michigan farm 

 is attributable to the fact that the cows are fed in the barn all the 

 year, and thus more manure is recovered than on the other farms. 



