COMPUTATION OF RATIONS 17 
much carbohydrates and fat; the village cow too much of protein 
and too little of the carbohydrates and fat; and the best results are 
not obtained in either case. The country cow loses in weight; she 
gets poor; she is forced to take from her own body much protein 
stored in flesh to use for milk and tissue repair. The village cow 
may or may not thin down, but the necessity of using the protein 
in the food for meeting all the functions of the nutrients acts to her 
disadvantage and she is never able to be at her best. 
3. Mixed foods.—Best results are always secured when 
the two methods are 
merged; when the coun- | 
try cow is given concen- 
trates in addition to the 
farm-raised roughages, 
and the village cow hay 
and stover in addition to 
the feed-store mill feeds. 
It is not enough to se- 
cure grain as concen- 
trates for the country 
cow either; the selection 
Nan Va YA \ 
Butter produced from 
dollars north of feed 
89 lbs 
A SILAGE-GRAIN| ee 
: FOR rt 
“| DAIRY cows [Jeaitstinedtar 
AVERAGE DAILY AVERAGE DAILY 
must be made on the RATION RATION 
C nese Consumed by each cow Consumed byeach cow 
basis of the composition ; _ | fed thesilage ration fed the special grainration] 
and, since the country Two DART RATIONS. 
cow’s ration is already Two rations for dairy cows have been com- 
is pared. From one, 8.9 pounds of butter was 
out of proportion be- produced from one dollar’s worth of feed, 
while from the other but 5.28 pounds of but- 
cause of the excess Of ter was obtained from a dollar’s worth of 
-, feed. This shows how two rations may cost 
carbohydrates and fat, it the same and one may be worth a great deal 
would not help matters more for final returns, 
any by a purchase of a grain food also low in protein. 
In practice many feeders buy corn meal as a dairy concentrate; 
instead of improving the ration this makes things worse, because 
corn meal added to grass hay, corn stover and straw only increases 
the cost without supplying any appreciable increase of protein. The 
-way out of this difficulty is to study the available concentrates and 
select one or more that contains protein in greatest abundance, and 
not starch and fat. 
