J. Anim Sci.
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J. Anim Sci. 1967. 26:632-637.
© 1967 American Society of Animal Science
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Inhibition of Rumen Cellulose Digestion by Extracts of Sericea Lespedeza1

S. J. Lyford, Jr.2, W. W. G. Smart, Jr.3 and T. A. Bell4, 5,

North Carolina Agricultural Experiment Station, Raleigh

Abstract

Cellulose hydrolysis was found to be inhibited by a purified preparation of a waterextractable inhibitor from fresh sericea forage. This inhibition was obtained under rumen conditions as well as in in vitro trials. When casein was added to the cellulose-rumen fluid mixture containing PSI, considerable protection of activity was afforded to the cellulose degrading system; but at high levels of inhibitor, casein had no effect. While fine chopping of the fresh material or drying of the forage reduced the amount of extractable inhibitor to a low level, the digestibility of the cellulose of the dry form was not higher than the fresh forage.

Footnotes

1 Contribution from the Departments of Animal Science and Food Science, North Carolina Agricultural Experiment Station, Director of Research as Taper No.2263 of the Journal series.

2 Based on thesis data presented by the senior author to the Graduate Faculty of North Carolina State University in partial fulfillment of the requirements for the Ph.D. degree. Present address: Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts.

3 Present address: Chemistry Department, Georgia Experiment Station, Experiment, Georgia.

4 U. S. Food Fermentation Laboratory (one of the laboratories of the Southern Utilization Research and Development Division, U.S.D.A.).

5 The authors wish to express appreciation to Mr. Hervey




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J. C. Burns
ASAS Centennial Paper: Utilization of pasture and forages by ruminants: A historical perspective
J Anim Sci, December 1, 2008; 86(12): 3647 - 3663.
[Abstract] [Full Text] [PDF]


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Copyright © 1967 by the American Society of Animal Science.