432 MAI^UAL OF CATTLE-FEEDIlSra. 



the milk-glands, and is not added to the stock of circula- 



toiy proteii). 



Org-aniG Nutrients.— The following feeding standard, 

 based on the nmncrons feeding experinienth on milk cows 

 already made, is the one recommended by Wolff : 



Feedi]S[g Standakd for Milk Cows —Per Day and 1,000 Pounds 



LiVE-WEIGnT. 



Dige'^tible protein ^ ^ pounds. 



'' fat 0.4 '' 



' ' carbhydrates l^-S 



Nutritive ratio 1 '• 5 4 



Total dry matter ^4 i/ounds. 



These qnantities correspond to the feed which the ani- 

 mals would obtain on good pastnrage. If they are fed 

 with average hay, it is necessary to add to it some rather 

 nitrogenous and eabily digestible feeding stuif, in order to 

 bring the ration np to the standard and ensure an abun- 

 dant flow of milk. 



The quantity of the non-nitrogenous nutrients may be 

 increased beyond the amoimt given above, if the fodder at 

 disposal permit ; but such an increase will hardly be of any 

 special advantage in the production of milk, as has been 

 shown in experiments by Kiihn and Stohmann. 



Variations from Feeding Standard. — It is sufficiently 

 evident, from the facts coneernnig milk production already 

 presented, and from tlie considerations advanced in the 

 chapter on Feeding Standards, that a feeding standard like 

 that just given can have only a general value, and that the 

 feeding must be largely influenced by the individuality of 

 the animal and by the amount of milk which it is desired 

 to produce. 



The maximum amount of milk which a cow can produce 

 is deternmied by the size and quality of her milk-glands, 



