1905.] PUBLIC DOCUMENT — No. 33. 73 



The sheep ate the material readily and digested it without 

 trouble. From the high avei-age digestibility and an experi- 

 ment with daii'y animals elsewhere re})orted,i j^ j^ believed 

 the dried pulp has a feeding value about 10 per cent, less 

 than corn meal. 



Armour's Blood Meal, especially prepared for cattle feed- 

 ing, was found to contain 95.24 per cent, of protein and 

 only traces of fat and fiber. Its mechanical condition was 

 all that could be desired. As the detailed experiment shows, 

 it was fed to two young sheep in combination with hay and 

 corn meal. In figuring the digestibility of the blood the co- 

 efficients for the corn meal were taken from Lindsey's com- 

 pilation. ^ The two sheep digested the dry matter of the 

 blood quite thoroughly, namely, 95.14 per cent. The pro- 

 tein was not as thoroughly digested, — 83.99 per cent. ; but 

 this must be more apparent than real, and due to the in- 

 fluence of the other constituents. It is probable that the 

 protein of the hay and corn meal was not quite as thoroughh^ 

 digested as the coefficients call for, leaving a slight excess 

 undigested, which must of necessity be charged against the 

 blood. This supposition is strengthened by the fact that 

 there is a small plus balance of extract matter and a minus 

 balance of fiber, which show dio:estible divergences from the 

 established hay and corn meal coefficients. Judging from 

 the digestibility of the dry matter of the blood, w^e may safely 

 conclude that the blood protein must be quite thoroughl}'- 

 utilized by farm animals. An experiment with dried blood 

 as a source of protein for dairy animals has been completed, 

 and its economic value will be discussed when the results of 

 that experiment are published. 



So^ Bean Meal (Brooks Medium (xreen). — The beans 

 were grown at the station, and coarsely ground before being 

 fed. The}^ were of the usual good quality, containing 40, (»9 

 per cent, of protein and 21.10 per cent, fat in dry matter. 

 The coefficients obtained in 1903 follow, and also those 

 secured in the present trial : — 



1 Loco citato. 



