Feeding Standards Calculating Rations. 



127 



It is shown that the cow consumed 441 feed units during the 

 month. If in that time she yielded 850 Ibs. of milk, containing 

 30.6 Ibs. of fat, each 100 feed units produced 5" = 193 Ibs. of 

 milk, containing Jg = 6.9 Ibs. butter fat. If the fat brought 30 

 cents per lb., 100 feed units would return 6.9 x $0.30=$2.07. 



150. The Swedish Test Associations. In what follows is shown 

 some of the work of the Swedish Test Associations for the year 

 1906-7. The first table shows the feed units consumed per cow 

 annually in the association having the poorest and the best re- 

 turns, and the average of 96 associations. The second table shows 

 the production per cow and per 100 feed units consumed. 



Average feed units consumed annually per cow as found ~by the Swedish 



Test Associations. 



Average production per cow and per 100 feed units. 



The first table shows that the association with the poorest record 

 fed each cow, on the average, 4920 feed units during the year. The 

 association with the highest record fed 5733 units per cow, while 

 the average for 96 associations was 5280 feed units. 



The second table shows that the average cow in the poorest 

 association gave 6261 Ibs. of milk, while in the best association she 

 gave 8650 Ibs. The herds in the poorest association yielded about 



