224 ILLINOIS DAIRYMEN'S ASSOCIATION. 



$35.51 or $87.54 per cow, the causes for which will be discussed 

 later. 



TABLE FOUR. 



Highest Average Herd, No. 24 



Milk B. Fat 



Per cent Av. Milk Av. Fat $1.15 25c 



Milk. Fat B. Fat. per day. per day. per 100. per It). 



Best, No. 1 6911.4 6.91 477.3 21.86 1.50 $79.48 $119.32 



Poorest, No. 9. ..3477.6 4.64 161.46 29.22 1.35 .39.99 40.36 



Average 5921.41 5.91 350.17 21.10 1.25 68.09 87.54 



Lowest Average Herd, No. 23. 



Best, No. 24 ...4337.2 4.96 215.55 18.53 .92 49.87 53.88 



Poorest, No. 26.1845.8 4.24 78.34 5.46 .24 21.22 19.58 



Average 3314.1 4.28 142.05 13.43 .57 38.11 35.51 



Medium Average Herd, No. 20. 



Best, No 7 7529.5 ,3.93 296.09 21.88 .861 86.59 74.02 



Poorest, No. 11.2980.0 4.56 136.02 13.30 .607 34.27 34.00 



Average 5367.75 3.84 225.71 20.52 .789 67.48' 56.43 



In order to show the difference in productive capacity of the 

 cows tested and the variation within the herds, table 4 has been 

 prepared. Three herds have been selected; one showing the 

 highest average production; another the lowest average pro- 

 duction, and a third showing medium production. In herd 24 

 the best cow produced 477.3 pounds butter fat; the poorest 

 161.46 pounds, the average for the herd being 350. :17 pounds 

 per year. The poorest cow paid $40.36 for butter fat, the best 

 $119.32, the average for the herd being $87.54. You will ob- 

 serve also that the best cow in the poorest herd (23) produced 

 215.55 pounds of butter fat, while the poorest cow yielded only 

 78.34 pounds, the return for the same being $53.88 and $19.58 

 respectively. The average production of this herd is 142.05 

 pounds of butter fat equal to $35.51 per cow. Under ordinary 

 conditions of food and care this would leave little or no profit, but 

 in this particular instance the herd was run on cheap pasture and 

 given inexpensive farm grown food. In winter the most of the 

 herd was dry and at no time did they receive much concentrated 

 food. The owner contended that in keeping them this way their 

 production was clear gain, as he had plenty of cheap land for 



