460 

 The followiug are the results fouud: 



Co-eJJioients ofdigestihility. 



Dry 



matter. 



Crude 

 protein. 



Albumi- 

 noid 

 protein. 



Crude 

 fat. 



Ci-ude 

 cellulose. 



Nitrogen- 

 free 

 extract. 



Hay 



Bean meal 



Swedish turnips 



Barley meal 



Kicemeal 



Per cent. 

 62.24 

 80.02 

 96.28 

 90.80 

 66.02 



Per cent. 

 53 36 



88. 64 

 62. 26 

 63.17 

 44.45 



Per cent. 

 45.8 

 78.2 

 30.4 

 62.2 

 39.5 



Per cent. 

 42.93 

 49.05 

 93.46 



77.84 

 83.15 



Per cent. 

 60.71 



100 

 100 

 34.37 



Per cent. 

 67.68 

 88.76 

 99.05 

 96.16 

 83.84 



The co-efficients of digestibility giveu by E. Wolff* for barley meal 

 aiid rice meal are as follows : 



Organic 

 matter. 



Crude 

 protein. 



Crude 

 fat. 



Crude 

 cellulose. 



Nitrogen- 

 free 

 extract. 



Barley meal. 

 Rice meal... 



Per cent. 

 81 

 89 



Per cent. 



77 



77 



Per cent. 

 100 



Per cent. 

 00 

 67 



Per cent. 

 87 

 100 



The figures given by Wolff for barley meal are based on experiments 

 by M. Maercker and E. Schulze and were not regarded by them as 

 altogether conclusive. The nutritive ratio of the ration (hay and 

 barley meal) used by them was 1 : 8.4, while that of the mixture of 

 meadow hay and barley meal fed by the authors was, as given above, 

 1 : 5. Experiments in artificial digestion showed that the co-efficients 

 fouud for protein in the trial with sheep were not too low. The unusu- 

 ally high co-efficient found for crude cellulose the authors believe to 

 be traceable to an error in the co-efficient for the cellulose of bean meal. 

 If this had been estimated too low, when barley meal came to be fed in 

 connection with it the cellulose digested above the amount previously 

 observed would be attributed to the barley meal and would go to 

 increase the co-efficient from that material. The authors believe that 

 the results with rice meal are a true example of "depression in digest- 

 ibility," which may account for the unsatisfactory results from time to 

 time obtained from this product in practice and that a more careful 

 feeding would probably show a higher rate of digestibility. No 

 decrease in the digestibility of Swedish turnips was noticed where the 

 amount fed was increased so that they supplied 52 to 54 per cent of the 

 total dry matter of the ration. 



In the course of the experiment the following facts were also 

 observed : On an average a South Hanover sheep weighing 31.5 kilograms 

 (69.3 pounds), kept at a stall temperature of lO.lo G. (50° Eah.), required 

 for maintenance 74.1 grains of protein, 8.8 grams of fat, 70.5 grams of 

 cellulose, and 301.4 grams of nitrogen-free extract per day. No differ- 

 ence was brought out in this trial between cellulose and easily soluble 

 carbohydrates in their action as protein economizers. 



*Meiitze] uiul v. Loiigerke, Laiulw. Kaloudcr, 18U0, p. 112. 



