136 RESULTS OF EXPERIMENTS IN SWINE FEEDING 
calls for .6 of a pound of digestible protein per day per 100 
pounds, live weight. During the next seven weeks there is a 
uniform increase each week until the pigs are receiving .7 of 
a pound per day per 100 pounds, live weight. During the 
next four weeks there is a uniform decrease to the starting- 
point of .6 of a pound daily per 100 pounds, lve weight. 
Eleven weeks have now clapsed since the commencement of 
the feeding period, and at the beginning of the twelfth week, 
the protein is increased to .65 of a pound per day per 100 
pounds, live weight, and is maintained at this point until the 
pig is six months old. After the pig is six months old, it is fed 
largely upon carbonaceous feeds, though it has been found an 
advantage to supply rather more protein than is found in corn. 
It will be seen that the weekly increase of digestible protein 
during the first seven weeks is about .014 of a pound. The 
weekly decrease during the eighth, ninth, tenth, and eleventh 
weeks is .25 of a pound. Then there is an increase for the 
twelfth week of .25 of a pourid, and the allowance is then 
kept uniform until the pig is six months old. 
Carbohydrates.—For pigs two months old the standard 
calls for a daily allowance of 2.2 pounds of digestible carbo- 
hydrates per 100 pounds, live weight, with a uniform increasc, 
week by week, until the pigs are 6 months old, at which time 
the daily allowance is 2.6 pounds of digestible carbohydrates 
per 100 pounds, live weight. The author of the circular states 
that their latest investigations indicate that the carbohydrate 
allowance might start at 2.4 pounds and end at 2.8 pounds. 
After the pigs are 6 months old the ration is largely car- 
bonaceous. According to the standard given, the weekly in- 
crease in digestible carbohydrates amounts to about .02 of a 
pound. 
Ether Extract or Fat.—The fat content of the ration was 
found difficult to control, but the author states that pigs will 
