28 



Feeds and Feeding. 



malt sprouts. Weights and analyses of feed and excrement were 

 made as before. The digestibility of the malt sprouts as deter- 

 mined in this trial is shown in the following table: 



Feeding U-ial with sheep to ascertain the digestibility of maU sprouts, 

 average for one day^ s feeding — Wisconsin Station. 



The digestibility of malt sprouts is determined indirectly in 

 the following manner: The dry matter fed in the clover hay and 

 malt sprouts equals 655 grams. The excreted dry matter equals 

 295.2 grams, so that the total quantity digested is the difference, 

 359.8 grams. In the previous trial, as the average of two periods, 

 it was found that 51.2 per cent, of the dry matter in clover hay was 

 digestible. Multiplying 500.9 grams by this factor, 256.4 results, 

 which represents the quantity of dry matter in the hay that 

 was digested. Subtracting this from 359.8 grams, there is left 

 103.4 grams, or 67.1 per cent., which must be the dry matter 

 digested from the malt sprouts. In this maiuier the several 

 digestion coefficients for malt sprouts are determined. The table 

 reports 104.6 per cent, of the ether extract of the malt sprouts 

 digested — an absurdity. Such a result may be due to an error 

 in the work, or more probably to the fact that more ether extract 

 was digested from the clover hay in the second trial than in the 

 first one. The statement relative to ether extract in the next 

 article may have a bearing on this result. 



49. Digestibility of food nutrients. — Errors in digestion experi- 

 ments arise, among other causes, from the addition of bile prod- 



