J. Anim Sci.
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J. Anim Sci. 1965. 24:826-829.
© 1965 American Society of Animal Science
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Postruminal Fiber Digestibility

P. A. Putnam and R. E. Davis1, 2,

U. S. Department of Agriculture

Abstract

A series of digestion trials was conducted with two intact and two abomasally fistulated calves 4 to 14 months of age to determine the extent of postruminal digestion of fiber. Calves were fed fibrous feed through an abomasal fistula. Digestion coefficients obtained for postruminal fiber digestion were compared to digestion coefficients determined using intact calves and the fistulated calves when fed per os. The data indicate a postruminal fiber digestion coefficient of 29% for alfalfa fiber and for wood cellulose, as compared to digestion coefficients of 43 and 63%, respectively, when these sources of fiber were fed per os.

Footnotes

1 Animal Husbandry Research Division, ARS, U.S.D.A., Beltsville, Maryland.

2 The authors express their appreciation to Paul E. Bender for caring for experimental animals and to R. E. McDowell for supplying the calves.






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Copyright © 1965 by the American Society of Animal Science.