J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J. Anim Sci. 1988. 66:559-565.
© 1988 American Society of Animal Science
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Wedig, C. L.
Right arrow Articles by Moore, K. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Wedig, C. L.
Right arrow Articles by Moore, K. J.

Effect of Brown Midrib and Normal Genotypes of Sorghum x Sudangrass on Ruminal Fluid and Particulate Rate of Passage from the Rumen and Extent of Digestion at Various Sites Along the Gastrointestinal Tract in Sheep1

C. L. Wedig2, E. H. Jaster2 and K. J. Moore3

University of Illinois, Urbana 61801

Abstract

The objectives of this experiment were to determine fluid and particulate rate of passage from the rumen and extent of digestion at various sites along the gastrointestinal tract in sheep fed normal and brown midrib sorghum x sudangrass hybrids. Four Suffolk wethers (80 kg) with ruminal, duodenal and ileal cannulae were assigned to one of four diets in a 4 x 4 Latin square with a 2 x 2 factorial arrangement of treatments. Diets were hays of two sorghum x sudangrass varieties, Redlan x Greenleaf and Redlan x Piper, and their corresponding brown midrib mutants. There were no compositional differences resulting from variety or genotype in lignin content or fiber components, although alkali-soluble phenolic acids were higher in normal genotypes than in brown midrib. Vanillin was lower, whereas para-coumaric acid was higher, in normal genotypes than in brown midrib mutants. Ruminal digestibility of neutral detergent fiber, acid detergent fiber and cellulose was lower (P<.05) for normal genotypes than for the brown midribs. Total-tract digestibility of cellulose was higher (P<.05) for brown midrib mutants than for corresponding normal genotypes. No quantitative differences in fiber composition or lignin content were detected between normal and brown midrib genotypes; however, differences in composition of alkali-soluble phenolic acids of the lignin fraction could explain differences in digestibility detected between the two genotypes.

Footnotes

1 Supported by Illinois Agric. Exp. Sta.

2 Dept. of Anim. Sci.

3 Dept. of Agron.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1988 by the American Society of Animal Science.