HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Grant, R. J. Articles by McDowell, R. E. Search for Related Content PubMed PubMed Citation Articles by Grant, R. J. Articles by McDowell, R. E.

Influence of Rumen Fluid Source and Fermentation Time on In Vitro True Dry Matter Digestibility¹

U. P. College of Agriculture, Los Banos, Laguna, Philippines
and Cornell University, Ithaca, NY 14850

ABSTRACT

The effect on true dry matter digestibility of Philippine feedstuffs was studied with different sources of rumen fluid inocula and varying fermentation time in an in vitro sysytem. In one experiment differences in true dry matter digestion in vitro were nil among three sources of rumen fluid inocula (buffalo, cattle-Philippines, cattle-Cornell University). for commonly fed tropical feedstuffs in the other experiment rumen fluid from the cattle at Cornell gave lower digestibilities. True dry matter digestibility in vitro increased for each 24 h increase in fermentation periods of 48, 72, and 96 h. Differences in digestibility between cattle and buffalo in metabolism studies (in vivo) cannot be explained by differences in rumen fluid.

¹ Submitted from Ph.D. thesis of senior author.

² Present address: Animal Health Department, Hoechst Pharmaceuticals, Inc., Somerville, NJ 08876.