10(3 HATCH EXPERIMENT STATION. [Jan. 



Fertilizer Ingredients, etc. — Concluded. 



First period: Herd II., bran ration. 



20.90 pounds nitrogen, valued at . . . . $3 55 



14.98 pound.s potash, valued at .... 75 



8.26 pounds phosphoric acid, valued at . . . 33 



Total, $4 63 



Second period: Herd I., liran r;ition. 



78.16 pounds nitrogen, valued at . . . . $13 29 



55.65 pounds potash, valued at .... 2 78 



31.02 pounds phosphoric acid, valued at . . . 1 24 



Total, $17 31 



Second period : Herd II., silage ration. 



78.38 pounds nitrogen, valued at . . . . $13 32 



54.89 pounds potash, valued at . . . . 2 74 



24.86 pounds phosphoric acid, valued at . . . 99 



Total, $17 05 



The total quantity and valuation of fertilizer ingredients 

 were nearly identical in each ration. 



Conclusions. 



1. The animals were in good condition during the entire 

 experiment, hence the silage proved equally as satisfactory 

 as bran for distributing the heavy concentrates (cotton-seed 

 meal and flour middlings). 



2. The so-called bran ration produced a trifle more milk 

 and milk ingredients than did the silage ration. Further- 

 more, it required a little less dry and digestible matter to 

 make a definite quantity of milk ingredients with the former 

 ration. 



3. It cost several per cent, more to produce milk with the 

 silage ration ; but this difl'erence was due primarily to the 

 temporarily increased market price of the corn and cob meal, 

 and not to the feeding' efl'ect of the ration. 



