FEEDING DAIRY CATTLE 247 
per head daily (Figs. 51 and 52). Only exceptionally large pro- 
ducers will give good returns for more than six or eight pounds of 
grain feed daily, with abundant roughage of good quality at hand. 
A common rule is to feed as many pounds of grain feeds a day per 
head as the cows produce pounds of butter fat during the week, 
and to feed as much roughage in addition as they will eat up 
clean. 
Fic. 51.—The ‘‘meal cart” used for weighing concentrates for the individual cows in the 
herd. (Ottawa Station.) 
Rations for Dairy Cows.—It is important, in making up 
rations for dairy cows, as for other classes of farm animals, to see 
to it that a liberal amount of easily digestible substances is sup- 
plied; nearly one-half of the dry matter of the ration should be 
given in the form of concentrated feeds in case of milch cows, the 
amount fed being governed primarily by the production of the 
cows. No moldy or decayed feeds should be fed, and, in the case of 
wet feeds, particular attention must be given to keeping clean the 
mangers and the premises about the stable. A variety of feeds is 
