57 



Coiiiixisite samples of the milk were tested weekly by 

 the Babcock test and the amount of fat thus found was 

 converted into butter by the usual method of multiply- 

 ing' by one and one-sixth. 



From the table below it will be seen that the basal 

 ration was the same for every cow, whatever the extra 

 food consumed at the same time. 



ao 



o 



S-i 



Cows. 



Pounds food in 21 davs. 



Vetch 



Hay 



Extra. 



Wheat 



Bran 



Extra. 



In basal ration. 



o <s 

 o -^ 



o S° 







I 

 I 

 I 



ii 



II 

 n 

 II 



Total. 



II 

 II 

 II 



I 



I 



I 



Total. 



Dec. 19 to 

 Jan. 9. 



Ida 



Hazena 



Hypatia 



Jan. 16 to 

 Feb. 6 



Lukie 



Susan 



Ada 



6 cows 



Ida .... 

 Hazena 

 Hypatia 

 Lukie . . 

 Susan . . 

 Ada .... 

 6 cows . 



231.4 

 234.4 

 234.4 



234.4 



234.4 



234.4 



1406.4 



255 

 189 

 252 

 210 

 245.5 

 252 

 1406.6 



The average daily cost of food per cow was 10.3 

 cents for the vetch ration and 14 cents for the wheat 

 bran ration at the price assumed as an average for 

 wheat bran, namely $20.00 per ton. 



Hence the vetch ration was the cheaper by 3.7 cents 

 per cow per day or fl.ll per month per cow. At this 

 rate the saving through the substitution of vetch hay 

 for wheat bran in a herd of 20 cows would be |22.20 per 

 month. 



