June 17, 1918 Digestibility of Corn Silage, Velvet Beans, and Alfalfa 613 



Table III. — Percentage composition of the feces 0/ steers 



Ration No. 



I.... 

 II... 

 III.. 



IV.. 



V... 

 VI. . 

 VII. 

 VIII 

 IX. . 



Digestion 

 trial No. 



a 

 b 

 c 

 a 

 b 

 c 

 a 

 b 

 c 

 a 

 b 

 c 

 a 

 b 

 c 

 a 

 b 

 c 

 a 

 b 



a 

 b 

 c 

 a 

 b 

 c 



Dry 

 matter. 



20.34 

 15.48 



15-07 

 21. 76 

 21. 72 

 21.28 

 20. 50 

 19.70 

 20. 205 

 24.24 

 20. 06 



21-53 

 19.42 

 18. 17 

 15. 60 

 16.97 

 19.40 

 18.05 



17-83 

 19.50 



17-39 

 17-39 

 20. 23 



16.37 

 17-39 

 19.49 

 20. 08 



Ether 

 extract. 



459 

 445 

 346 

 972 



035 



c86 



592 



097 

 920 



931 

 900 

 691 

 444 

 965 

 955 

 799 

 611 

 727 

 75° 

 750 

 800 

 689 



750 

 778 

 811 



Crude 

 fiber. 



4- 115 

 3.008 



8.238 

 8.336 

 8.331 

 4.159 

 4-355 

 4.231 

 8. 222 



6-635 

 6.668 

 4. 262 



4-373 

 3-638 

 6. 118 

 6.658 

 6.218 



5- 787 

 6. 361 



5-716 

 5-716 

 6. 126 



4-723 

 5-716 

 6. 215 

 6.444 



2. 276 



1. 714 

 1.467 



2. 677 

 2. 200 

 2. 291 

 2.818 

 2.324 

 2-633 

 2-552 

 2. 221 



2-33° 

 I. 641 



1-577 

 I. 426 

 I. 660 

 I. 812 

 1.929 

 1.699 

 1.865 

 1.779 

 1.779 

 2.319 



1. 916 

 1.779 



2. 279 

 2. 293 



Nitrogen. 



391 

 313 

 300 



507 

 520 

 464 



983 

 841 



931 

 541 

 437 

 498 

 628 



547 

 448 

 428 



56s 



555 

 405 

 473 

 455 

 455 

 550 

 454 



455 

 502 



518 



Nitrogen- 

 free extract. 



05 

 36 

 27 

 70 

 90 

 76 



49 



68 



665 



99 



55 



49 



69 



II 



29 

 55 

 44 

 64 

 20 

 59 

 30 

 30 

 55 

 20 



30 

 08 

 30 



The equipment used and the general methods of weighing and sampling 

 the feeds were similar to those previously described.^ The digestion trials 

 were of 12 days' duration each, with a minimum preliminary feeding 

 period of 18 days. The quantity of feed was so gauged that there were 

 no orts, and if a steer failed to eat its feed, the trial with that animal was 

 discontinued. 



DISCUSSION OF RESULTS 



The digestion coefficients, with which we are primaril)^ concerned, 

 obtained for the several rations are given in Tables IV to X, being sum- 

 marized and averaged in Tables VIII, IX, and X. In each instance the 

 starting point for these studies is the result of feeding-alone experiments, 

 probably the most accurate guide on the digestion of a specific food, 

 especially when the metabolic products are taken into account. How- 

 ever, this has not been done in this study. 



1 EwiNG, P. v., Wells, C. A., and Smith, F. H. Op. cit. 



