60 STORRS AGRICULTURAL EXPERIMENT STATION. 
Averages of rations fed by Connecticut dairymen, with daily yields 
of milk and butter and percentages of fat. 




DIGESTIBLE NUTRIENTS AND 









FUEL VALUES. ay, r 5 
os “ oer cm 2 
RATIONS. 3 ig ’ o A %) mA 
sh on — 0 SEO cal w = 
= a 2s Seg | ea Ass o = 
° fy Cie} x, 8 5 as > 
a OS > ee < eS 
Ibs.” |-Lbs¥| “Ebs Cal I Lbs % Lbs 
Average of all the rations (45), | 2.08 | .72 | 11.21 | 27750|6.5/17.6| 4.8] .97 
Average of 32 rations found | 7 6 
in actual practice, - e11.971473 | 11.571, 28250 | 7.0) 47.5) 4 eae 
Average of rations contain- | | 
ing 2.0 pounds or less of | 
digestible protein per day, }| 1.62} .65 | 11.37 | 26900/ 8.1 | 16.3| 4.7| .87 
as fed 16 herds (226 cows) | 
in actual practice, - a 

Average of rations containing | 
more than 2.0 pounds of | | 
digestible protein per day, -| 2.32 | .81 | 11.77 | 29600} 5.9] 18.7 | 4.9 |1.05 
as fed 16 herds (227 cows) | | 
inuactualipractice sais | 
Average of I1 wide rations 
(hretresil ac [onan 1.78; .64 | 11.86, 28100| 7.7| 18.0] 4.7 |1.00 
rations (second test) pro- }|2.40|.67 | 10.37 | 26600 | 5.1|18.2| 4.9 |1.04 
posed by the Statton, - 








Averages of. elt te) po 


MILK AND BUTTER PRODUCT OBTAINED IN THE FORTY-FIVE 
THSTS OF DAIRY HERDS. 
In the forty-five tests with the same number of rations there 
was considerable variation in the quantity of product obtained. 
The wide variations in milk and butter product were doubtless 
due in part to the quality of the cows making up the herds, 
and in part to differences in the rations fed. ‘The yields of 
milk for the 45 separate tests (32 distinct herds) ranged from 
13.2 pounds to 23.4 pounds per day, while the average yields 
of butter ranged from .7 pounds to 1.33 pounds per day, or 
from very nearly 5 pounds to 9% pounds of butter per week. 
This means that, taking the average per cow, the herd giving 
the largest flow of milk produced 80 per cent. more than the 
one giving the smallest flow, while the herd producing the 
most butter gave 90 per cent. more than the one producing 
the smallest amount. 
The advantage of rations with liberal quantities of protein is 
quite clearly shown when the herds are divided into two groups 
