Digestible Nutrient Content


 SUMMARY
 Napier grass, harvested as the seedspikes began to appear,
was low in crude protein and high in crude fiber. The silage
provided 0.34 percent of digestible crude protein and 14.38 per-
cent of total digestible nutrients. On the dry matter basis, it
provided only two-thirds as much total digestible nutrients as
corn silage.
 Crotalaria intermedia harvested in the bud and early bloom
stage made palatable silage of good protein content but high
in fiber. It contained 2.08 percent digestible crude protein and
10.72 percent total digestible nutrients. Undoubtedly, this
legume should be harvested in the pre-bud or early bud stage
to make a higher quality feed.
 Late-cut Natal grass hay was low in digestible crude protein,
but practically equal to timothy hay in total digestible nutrients.
 Dried grapefruit and orange cannery refuses contain only
half as much crude protein as dried beet pulp, and were only
about one-half as digestible, due perhaps to the heat treatment
in the drying process. However, they exceed beet pulp in total
digestible nutrients, hence may be looked upon as important
energy-yielding feeding by-products.

 ACKNOWLEDGMENTS
 Acknowledgments are made to Herbert Henley who cared for
the steers on digestion trials; to the late Arlington Henley, J. H.
Warrington, S. L. Mimms, and Jefferson Davis for manual col-
lection of the feces; and to W. T. Dunn, L. L. Rusoff, and I. I.
Rusoff for aid in analyses of the feed and feces samples. Three
Jersey steers were loaned to the Experiment Station by J. L.
Taylor for use in these digestion trials.

 LITERATURE CITED
 1. Association of Official Agricultural Chemists. Official and tentative
 methods of analysis. Ed. 2, 535 p. illus. Washington, D. C. 1925.
 2. BECKER, R. B., W. M. NEAL, P. T. Dix ARNOLD and A. L. SHEALY. A
 study of the palatability and possible toxicity of eleven species of
 Crotalaria, especially the toxicity of C. spectabilis Roth. Jour. Agr.
 Res. 50: 911-922. 1935.
 3. FORBES, E.B., and H. S. GRINDLEY. On the formulation of methods of
 experimentation in animal production. Bul. Natl. Research Council,
 Vol. 6, Part 2, No. 33: 17-27. 1923.
 4. HENRY, W. A., and F. B. MORRISON. Feeds and feeding. 18th Ed.,
 illus. Henry-Morrison Company, Madison, Wis. Pages 709-743. 1923.