FEED FOR THE COW 143 



better work than a poor type, in the same way 

 that a corliss engine will produce more power 

 from a given amount of steam than a common 

 slide valve engine. 



Uniform feeding impossible. Inasmuch as the 

 individual requirements of the animal must be 

 given consideration by a good dairyman, it is 

 readily seen that feeding all animals the same 

 amount of feed is neither advisable nor profit- 

 able. It would be unwise for a dairyman, if he 

 expects to get the best results from his cows, 

 to feed all the cows in the herd the same amount, 

 regardless of whether they are giving 15, 20, or 

 30 pounds of milk per day. This may be best 

 emphasized by calling attention to the standard 

 rations used in this connection by scientific dairy- 

 men all over the world. These were suggested 

 by the eminent German authorities, Wolff-Leh- 

 mann, as the result of their investigations. 



WOLFF-LEHMANN MODIFIED STANDARDS FOR A ONE- 

 THOUSAND-POUND COW 



Digestible Nutrients 

 Dry Carbohy- Ether Nutri- 



Matter Protein drates Extract tive 

 Lbs. Lbs. Lbs. Lbs. Ratio 



1. When giving 11 lbs. of 



milk daily 25 1.6 10 .3 1: 6.7 



2. When giving 16V> lbs. of 



milk daily 27 2.0 11 .4 1: 6.0 



3. When giving 22 lbs. of 



milk daily 29 2.5 13 .5 1: 5.7 



4. When giving 27% lbs. of 



milk daily 32 3.3 13 .8 1: 4.5 



Standard maintenance ra- 

 tion daily 18 .7 8 .1 1:11.8 



