THE FOOD OF MAINTENANCE. 97 
ether extract per hundred weight of cow, will be ample for a 
maintenance ration. Whether this allowance would be 
sufficient for cows receiving the treatment accorded them in 
a well regulated dairy in comfortable quarters, and allowed 
an outing in the yard for an hour or two during pleasant 
days in winter, still remains tobedetermined. Pendingsuch 
determination it is tentatively suggested that for a cow 
working in the dairy and having ordinarily good care and 
comfortable quarters the allowance for maintenance be 
calculated at 1.25 pounds of dry matter, containing .07 of a 
pound of protein, .7 of a pound of carbohydrates and .01 of 
a pound of ether extract per hundred pounds live weight. 
These factors are suggested because they seem warranted by 
the data obtained, and because it is deemed desirable for 
convenience in feeding practice, to express the requirements 
for food of maintenance in the simplest form possible, so it 
can be understood and used by the average feeder. 
The deductions from the data indicate: 
That the factors for food of maintenance in the Wolff 
feeding standard are in excess of the requirements. 
That a daily allowance of 11.38 of dry matter contain- 
ing of nutrients .63 of a pound of protein, 5.75 of carbohy- 
drates and .12 of a pound of ether extract per 1000 pounds 
live weight resulted in a daily average gain of about a 
quarter of a pound. 
It is tentatively suggested that the food of maintenance 
for a barren dry cow when at rest in stall be expressed in 
nutrients .6 of a pound of protein, 6. pounds of carbohy- 
drates and .1 of a pound of ether extract per 1000 pounds 
live weight and when at work in a dairy with ordinary good 
care and comfortable quarters, .7 of a pound of protein, 7. 
pounds of carbohydrates and .1 of a pound of ether extract 
be allowed per 1000 pounds live weight or one-tenth as 
much per cwt. 
