FEEDING FOR MILK 73 



weight, with different milk yields, is as follows. It will be noted 

 that the proportion of protein is higher than Haecker's standards. 



Cottonseed (or linseed) meal is one of the richest foodstuffs 

 in protein we possess, and may be added to advantage to bring 

 tip the proportion of protein in the ration, as one pound of the 

 meal is equivalent to about one-third pound of digestible protein. 

 Not more than two to three pounds daily of cottonseed meal should 

 be fed, however, on account of its poor digestibility in considerable 

 ■amounts, and because in excess it may render milk unfit for use as 

 an infant food. 



The following mixtures of concentrates may be employed with 

 an appropriate amount of roughage (if hay is used, as much may 

 be given as the cow will eat without waste) as daily rations for an 

 average cow : 



Bran, 4 lbs. ; corn chop, 3 lbs. ; oil meal, 1 lb. Or, 2 parts bran; 

 2, parts ground oats; 2 parts gluten, and 1 part oil meal, giving 8 

 lbs. of the mixture daily. Or, 4 lbs. oats; 3 lbs. bran; 1 lb. oil 

 meal. Or, 4 lbs. of bran and 4 lbs. of oats ; or, a mixture by weight 

 of bran, 3 parts; gluten feed, 2 parts; corn chop, 2 parts; and oil 

 meal, 1 part, giving 8 to 10 lbs. daily. Professor Haecker estimates 

 that a ration containing seven-tenths of a pound of digestible pro- 

 tein, 7 lbs. of digestible carbohydrates and one-tenth of a pound of 

 digestible ether extract (fat) is ample for the physical maintenance 

 of a cow weighing 1,000 lbs., not giving milk or subjected to other 

 demands. A ration having the proper proportion of nitrogenous 

 to non-nitrogenous nutrients, or, in other words, the proper nutritive 

 ratio, according to Wolff, is now called a balanced ration. Oil 



