200 



LLINOIS DAIRYMEN'S ASSOCIATION. 



Other standards have been formulated by investigators based upon 

 the feeding practice of prominent dairymen. Atwater and Phelps, of the 

 Connecticut Experiment Station, made a special study of this subject for 

 several winters and submitted a standard which seemed to give best 

 results. Woll, of the Wisconsin station, collected data from the reports 

 of 128 dairymen and submitted a proposed American standard ration for 

 dairy cows based upon the average obtained from the rations fed. 



Prof. W. A. Henry, director of the Wisconsin Experiment Station, in 

 his book on Feeds and Feeding, publishes on page 114 a table giving the 

 several feeding standards referred to, which are submitted for reference: 



Table VIII. — American and German Feeding Standards for Dairy Cows, 

 Digestible Nutrients per Day per 1000 Pounds Live Weight. 



RATION 



Dry 

 Matter 



Digestible Nutrients 



Pro- 

 tein 



Oarbo- 

 by- 



d rates 



Ether 

 Ex- 

 tract 



Nutri- 

 tive 

 Ratio 



Lbs. 

 Wolff original (German) feeding ration. . .24.0* 



Woll proposed American ration 24.5 



Atwater and Phelps proposed standard. . .25.0* 

 Wolff-Lehmann modified standard — 



I. When giving 11 lbs. milk daily. . . .25.0 

 II. When giving 16^ lbs. milk daily. 27.0 



III. When giving 22 lbs. milk daily... 29.0 



IV. When giving 27 y 2 lbs. milk daily. 32.0 

 Standard maintenance ration 18.0 



Lbs. 



Lbs. 



Lbs. 





2.5 



12.5 



.4 



1:5.4 



2.15 



13.27 



.74 



1:69 



2.5 



12 to 13 



5 to 8 



1:5.6 



1.6 



10.0 



.3 



1:6.7 



2.0 



11.0 



.4 



1:6.0 



2.5 



13.0 



.5 



1:5.7 



3.3 



13.0 



.8 



1:4.5 



.7 



8.0 



.1 



1:11.8 



* Organic matter. 



It will be seen that none of them made any allowance for the great 

 variation in yield of milk except Dr. Lehmann, who fixes the amount of 

 protein needed daily from 1.6 pounds for a cow yielding 11 pounds of milk 

 daily to 3.3 pounds for one yielding 27 y 2 pounds of milk per day. Dr. 

 Lehmann apparently calculated or found by experimental demonstration 

 that after the .7 of digestible protein for body maintenance was provided 

 for, the remainder of the protein was available for milk production and 

 that .081 of a pound was the amount of protein needed for the production 

 of 1 pound of milk; for 1.60 pounds protein prescribed for a cow giving 11 

 pounds of milk daily, less .7, the amount needed for maintaining the body, 



