PMID: 6406652Jun 1, 1983Paper

Production and metabolism of volatile fatty acids, glucose and CO2 in steers and the effects of monensin on volatile fatty acid kinetics

The Journal of Nutrition
L E Armentano, J W Young

Abstract

A study was conducted to determine effects of monensin supplementation on production and interconversion rates of rumen acetate, propionate, and butyrate and plasma acetate. Measurements were made by isotope dilution techniques in four Holstein steers fed a 70% alfalfa hay, 30% corn ration. In addition, a general kinetic method for solution of open systems has been applied to quantify metabolism of the rumen volatile fatty acids and glucose and the production of CO2. Dietary monensin increased rumen propionate production at the expense of rumen acetate production so that total volatile fatty acid production was unchanged. Butyrate production tended to increase, indicating that decreased acetate production may result in diversion of hexose to propionate and butyrate production and direction of reducing equivalents away from methane production. These changes were calculated to increase rumen fermentation efficiency by 6%. Oxidation of the rumen volatile fatty acids and systemic plasma glucose accounted for only 35% of CO2 production.

Citations

May 15, 2016·Proceedings of the National Academy of Sciences of the United States of America·Stephen W Ragsdale
Sep 11, 2017·Journal of Dairy Science·X Markantonatos, G A Varga
Aug 1, 1986·Journal of Dairy Science·L E ArmentanoP Umstadt
Aug 1, 1992·Journal of Dairy Science·J D QuigleyR N Heitmann
Jun 21, 2015·Applied and Environmental Microbiology·Johannes Bertsch, Volker Müller
Mar 6, 2017·Journal of Dairy Science·S GhimireM D Hanigan
Nov 26, 2013·Journal of Dairy Science·S GhimireM D Hanigan
Dec 9, 2003·Applied and Environmental Microbiology·Razvan DumitruStephen W Ragsdale
Oct 11, 2003·Journal of Environmental Quality·Luis Orlindo TedeschiThomas Paul Tylutki
Mar 11, 2006·Journal of Dairy Science·J L FirkinsN R St-Pierre
Jan 1, 1987·Comparative Biochemistry and Physiology. B, Comparative Biochemistry·M Bugaut
May 7, 1990·Biochimica Et Biophysica Acta·H H MollenhauerL D Rowe

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