1920] 



ANIMAL PRODUCTION. 



267 



digestion coefficients were negative in several cases when total feral nitrogen 

 was used as the basis of computation. A section of the paper is devoted to a 

 discussion of this matter. 



Further investigations of the composition and digestibility of some war- 

 time feeding stufts, h\ Uo.ncamp, O. Noi.te, and E. Bl.vnck yLandxc. Vera, 

 sta., 94 {1919), No. 3-4, pp. /53-/ SO). —Tests of feeding stuffs m digestibility 

 ("\I)eriments with sheep are reported. The composition and digestion coefhcients 

 follow: 



Composition and digestibility of war-time feeding stuffs. 



Materials te-sted. 



Composition (dry basis). 



Crude 

 protein. 



Crude 

 fat. 



Digestibility. 



Crude 

 fiber. 



N-free | Organic Crude 

 extract, matter, protein. 



Crude 

 fat. 



Crude 

 fiber. 



N-free 

 e.xtract. 



Rumen feed 



Glue feed 



Chopped corn cobs 



Waste sugar-beet seed and 



hulls 



Horse-bean bran 



Nettle me.ll 



Sugar-beet tails 



Per ct. 



2:5.03 



17.54 



2.99 



8.96 

 12.05 

 7.30 

 7.34 



Per ct. 

 2.19 

 2.43 



.84 



3.30 

 .53 

 .76 

 .74 



Per ct. 



14.96 

 27.15 

 35.58 



35.56 

 42.82 

 49.23 

 11.34 



Perct. 



45. 84 

 43.63 

 69.46 



45.24 

 42.22 

 36.63 

 62.09 



Perct. 

 63.3 

 36.7 

 53.1 



31.4 

 70.0 

 .36. 5 

 78.1 



Perct. 



64.0 



76.0 



.0 



54.1 

 54.1 

 5.5.4 

 45.2 



Per ct. 

 42.5 

 35.3 

 34.3 



84.7 



95.8 



61.9 



.0 



Perct. 

 37.9 

 1.3.0 

 60.1 



.0 

 68.3 

 28.2 

 71.6 



Perct. 

 73.9 

 36.0 

 53.7 



49.2 

 76.3 

 43.4 

 8.5.6 



The rumen feed was a mixture of molasses and the contents of the rumen of 

 slaughtered cattle. The glue feed consisted of chaff, heather, herbaceous resi- 

 dues, and gelatinous material from animal cadavers. The nettle meal was a 

 by-product of the nettle-fiber indu.stry. 



In the trials meadow hay formed the basic roughage. Poppy seed cake was 

 used to supplement the sugar-beet seed and the corn coi)s, linseed cake to supple- 

 ment the nettle meal, and dried yeast to supplement the sugar-beet tails. The 

 detailed data are given. 



Tlie hydrolysis of straw by the Heckmann process. — I, Influence of dura- 

 tion of hydrolysis on the e.vtent of the nutritive material made available, 

 G. FiNGERLiNG and K. Schmidt (Landic. Vers. Sta., 94 {1919), No. 3-4, pp. 115- 

 152, fig. 1). — Sixteen digestion trials with sheep and 2 with steers were con- 

 ducted to determine the nutritive value of rye straw treated by the Beckmunn 

 process' (hydrolysis with sodium hydroxid) for different periods. The straw 

 was supplemented by linseed meal, various salts, and in .some cases molasses. 

 The following are the averages of the digestion coefficients for each period 

 of treatment : 



Average digestion coefficients {ruminants) for rye straic hydrolyzcd with 



sodium hydroxid. 



The composition of the different samples of straw is also reported. 



' E. Beckmann, Sltzber. Preuss. Akad. Wiss. 1919, pp. 275-285 ; aba. in Chem. Ab». 

 13(1919). No. 20, p. 2567. 



