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


     

J. Anim Sci. 1970. 30:988-1001.
© 1970 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 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 Purser, D. B.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Purser, D. B.

Nitrogen Metabolism in the Rumen: Microorganisms as a Source of Protein for the Ruminant Animal1

D. B. Purser

Michigan State University, East Lansing2

Abstract

In the past several years review papers have dealt with a number of different aspects of nitrogen metabolism in the ruminant (McDonald, 1958, 1968; Conrad and Hibbs, 1968; Waldo, 1968; Chalupa, 1968). The present paper is concerned with the qualitative and quantitative evaluation of microbial protein as a source of protein (amino acids) to the host animal. Emphasis has been placed upon those physiological aspects considered to be capable of influencing the amino acid nutrition of the ruminant animal, and especially to some of those systems about which very little specific information is available. Consequently, this paper is an appraisal of several specific aspects of ruminant nitrogen metabolism rather than a review of this subject.

The discussion is divided into three general areas (a) a consideration of the amino acid composition and nutritive value of the rumen microorganisms (b) a discussion of factors influencing the availability of the amino acids to the host animal's metabolic system and, finally, (c) a discussion of quantitative aspects of the relative supply of energy and protein to the host animal.

Footnotes

1 Invitational paper presented at a symposium on Nitrogen Metabolism in Ruminants at the 60th Annual Meeting of the American Society of Animal Science, Stillwater, Oklahoma, July 31, 1968.

2 Published with the approval of the Director of the Michigan Agricultural Experiment Station as Journal Article No. 4758.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1970 by the American Society of Animal Science.