21 



on our market. It may be that the quality of the proteids of the oat 

 grain may have something to do with it ; or the amount of fat may influ- 

 ence its nutritive value. Whatever be the cause we know that a compon- 

 ent of a ration for work horses this special grain is of particular impor- 

 tance. Let us remember, however, that oats vary as greatly in com- 

 position as do some of the by-products we have examined, and that it is 

 important that the amount of protein in oats be as large as possible. 

 Remembering this the intelligent feeder will select the variety of this par- 

 ticula'. grain which gives the greatest yield with a corresponding decrease 

 of crude fibre. * 



Mill Feed. 



Comparing the average composition of the foods recorded in this 

 table with those of oat dust, we find that the latter contains a much 

 higher percentage of crude protein and a correspondingly lower percen- 

 tage of crude fibre. The oat dust must, therefore, be considered the 

 better of the two. 



No experiments have yet been conducted at this station to show 

 which of the two foods is the more digestible. We hope, however, to 

 be able in the near future to furnish this very desirable information. 



Barley Dust. 



"This by-product in the manufacture of pot and pearl barley is 

 obtained by continued scouring of the grain with a stone. During the 

 process the dust is carried away by means of a suction fan. Should 



there be any oat grains iri the barley, they would also be broken up in 

 the process and would appear in the dust." 



The ten samples show an average of 14 per cent, of protein, which 

 is a fair amount in a feeding-stuff. It will be noticed, however, that 

 there is a very considerable amount of crude fibre in this product. For 

 this reason we do not consider it as valuable for feeding purposes as it 

 would be if less fibre were present. 



The microscopic examination of these samples revealed in most 

 cases considerable quantities of finely pulverized barley hulls. Such by- 

 products as barley hulls, because of their low digestibility, are very un- 

 desirable in a cattle food. Notwithstanding this fact the samples of 

 barley dust examined show a fairly high protein content, and might be 

 advantageously fed to certain classes of keep animals. 



Malt Sprolts. 



Dried grains and malt sprouts, by-products from distilleries and 

 breweries, are frequently used as cattle foods. To obtain these products 

 the grain is first caused to sprout, and as a result of this growth the 

 •starch of the grain is changed to sugar. The sprouts are then removed 

 and sold by dealers, sometimes in the wet condition, but for shipment 

 they are dried and put up in sacks or barrels. 



