DIGESTION EXPERIMENTS WITH SHEEP. 



;27 



Vinegar grains were put out by the Fleischmann Company, Chicago, 

 and represent the residue in the manufacture of yeast, or possibly of 

 yeast and distilled liquors. They tested 7.63 per cent, water, and the 

 dry matter contained 2.54 per cent, ash, 20.39 per cent, protein, 20.12 

 per cent, fiber, 50.33 per cent, extract matter and 6.62 per cent. fat. They 

 were fed together with hay to four sheep. For some reason Sheep IX. and 

 XI. did not digest them as well as did Sheep IV. and VI. The average 

 results from the four sheep show that in total digestible matter, fiber and 

 extract they compare well with dried brewers' grains, although the pro- 

 tein of the latter is more completely utilized. They are certainly an 

 addition to our supply of protein concentrates, and can be used in the 

 grain ration in a similar way to dried brewers' grains. 



Summary of Coefficients of New Bedford Garbage Tankage. 



Excluded from average. 



This tankage represents the garbage collected in the city of New Bed- 

 ford which was treated by the so-called Cobwell process. Briefly stated, 

 the method of treatment consists in removing, so far as possible, from the 

 material as received, all glass, tin cans, banana and orange peel, after which 

 the residue is placed in large iron tanks and treated with benzine to re- 

 move the fat, which process also takes out the larger part of the water. 

 It is then run over conveyors, and any other objectionable material is 

 removed, after which it is ground. 



The tankage contained 8.53 per cent, water, and in dry matter 15.72 

 per cent, ash, 22.02 per cent, protein, 9.67 per cent, fiber, 50.92 per cent, 

 extract matter and 1,67 per cent. fat. It. was in good mechanical con- 

 dition, was fed with hay and gluten feed, and constituted about 18 per 

 cent, of the ration, which had a nutritive ratio of 1:7. 



Sheep IV. digested the tankage poorly, and it has seemed wise to 

 exclude the coefficients from the average of those secured with the other 

 two sheep. 



The protein was not well digested^ which indicated its inferiority as 

 compared with material derived from slaughterhouses. This was con- 

 firmed by subjecting the tankage to the action of the alkaline permanganate 

 method for determining nitrogen availability, and the securing of an 



