POINT OF VIEW ON LIVE-STOCK PROBLEMS 217 



Some idea of the production to be expected per feed 

 unit is given by Table 32 from results of a cow competi- 

 tion in Wisconsin. The cows in this test were better than 

 average cows. The cows averaged about 6.5 pounds of 

 butter fat per 100 feed units. The average milk produc- 

 tion varied from 128 pounds for Jerseys to 186 for 

 Holsteins per 100 feed units. The total solids in the milk 

 varied from 18 for Jerseys to 22 for Holsteins per 100 feed 

 units. There is of course great variation in individual 

 cows. In this test, the poorest 30 cows gave 5 pounds of 

 butter fat per 100 feed units, and the best 30 cows gave 

 7.6 pounds per 100 feed units. 



TABLE 32. PRODUCTION PER FEED UNIT 1 



1 Wisconsin, Bulletin 226, p. 21. 



ANIMAL RECORDS 



140. Milk records. Every dairyman who wishes to 

 increase his profits should keep milk records of individual 

 cows. Only in this way can he tell which cows are worth 

 keeping. The prices of milk and butter are so low that 

 the margin of profit in the dairy business is very close. 

 The profit may easily be changed to a decided loss by the 



