A STUDY OF RATIONS FED TO MILCH COWS. 37 
butter was reduced three cents in the second test (see table 10). 
Although the quantity of milk produced per day was slightly 
less in the second test than in the first, the quality of the milk 
was enough improved to more than make up for the loss in 
quantity. The second ration would have been fully as economi- 
cal as the first even had the value of the coarse fodders remained 
the same in each, because the increase in the cost of the second 
grain ration (one cent) was covered by the increased quantity 
of butter, estimating the butter at twenty cents per pound. 
Dairy Hlerd ].— Tests 39 and 41.— Calculated per average weight 
of herd (725 pounds). 


DIGESTIBLE NUTRIENTS AND 
FEEDING STUFES. 










q 
FueL VALUE. eee 
om) + 
is : a ) we) OS © 
Kind 3 @ = Os 95 122/ O los! 8 
j ie) ces Sg | oa | ishys Fa 
5 = Obs oe Sees caal Sie} 
< py a A > 
First Test isbs3. ih Lebssn) lubsejelabs: Cal qT: | Cts. | Cts. | Cts 
Dec. 14 to Dec. 26,1590. 12 Days. 







Grain, § Corn meal, - hy peice eye ete Oarc mae iol 
etc., ( Buffalo gluten feed,| 4.1 ; oot 94) 10950) See ais eee ier 
(Corn ensilage, - [28.4] 
Hays, | Oat hay, - +d OF3.M 
slow a biay sc Bee na -70| .35| 9.31/20100 Ria CTRL 
poise: : Ey OSS J | | 
Total food, - -  - (68.7 /1.81) .58)13.25,30450) 8.0/16.3) 5.8/10.5 
Second Test. 
Jan. 11 to Jan. 23,1897. -12 Days. 
: Buffalo gluten feed,| 3.7 
ey ieee bran, a 1,85] .38| 2.92/10500] 2.1, 6.6} 3.6] 3.0 
ak Cotton seed meal, | 1.8 \ | 
epee \ Corn ensilage, - |28.4 ‘| 
hee? Oat hay; >. \- >t AI .59| .35| 7.83/17100|14.5| 8.0] 2.7) 5.3 
ai ( Hay, - - wth 208 ; 
Total food, - - - |43.5 |2.44) .73 10.75 27600) 5.1 14.6] 6.3) 8.3 





DAIRY HERD K.—TESTS 40 AND 42. 
The first test made on this herd was begun December 28, and 
the second ended February 6. Nine cows were used in the 
tests—seven grade and two registered Jerseys. The average 
estimated weight of the cows was 750 pounds, the average age 
8% years. All of the cows except one, which was farrow, had 
quite recently calved. The ration fed in the first test was con- 
siderably below the commonly accepted standards in protein and 
4 
