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 Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Purser, D. B. Articles by Cline, J. H. Search for Related Content PubMed Articles by Purser, D. B. Articles by Cline, J. H.

Influence of Tylosin and Aureomycin upon Rumen Metabolism and the Microbial Population^{1, 2,}

Ohio State University, Columbus

Abstract

Supplementation of a Control Ration With Tylosin (15 Mg./Day) or Aureomycin (30 mg./Day) Provided Three Treatments in a 3 x 3 Latin-Square Experiment. Six Wethers were Used. Rumen Protozoal Concentrations were Increased following antibiotic supplementation, while no Differences were Observed In The Total Viable Bacteria Counts. Marked Differences Were Observed When Viable Bacteria Determinations Were Made On Media Containing Rumen Fluid From Each Treatment, Particularly With The Media Containing Rumen Fluid From Animals Which received tylosin. Volatile fatty acid Distributions Were Modified by The Treatments. Butyric Acid Concentrations were Greater For The Tylosin Than For The Control treatment Before Feeding, But Not after Feeding; The Converse Was True For Propionic Acid.

¹ This work was supported in part by a grant from Eli Lilly and Company and in part by an NIH training grant to TJK.

² The authors acknowledge the assistance of Miss Suzanne Buechler in carrying out this work.

³ Institute of Nutrition and Food Technology.

⁴ Department of Animal Science.