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 lbs. of milk, containing 

 30.6 lbs. of fat, each 100 feed units produced f^^ = 193 lbs. of 

 milk, containing ^« = 6.9 lbs. 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 coiv as found hy the Swedish 

 Test Associations. 



Association 

 showing poorest returns 

 showing best returns . . - 



Average of 96 associations 



Concentrates 



Oil 



cakes 



Units 



900 



1056 



856 



Bran 



and 



grains 



Units 

 581 



878 



708 



Boots, 



taeet 

 pulp 



Units 



900 



1410 



1166 



Roughages 



Hay 

 and 



straw 



Units 

 1142 

 1078 



1256 



SoilatfB 

 and 

 past- 

 ure 



Units 

 1397 

 1311 



1294 



Units 

 4920 

 5733 



5280 



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 lbs. of milk, while in the best association she 

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



