An illustrative analysis of atypical gas production profiles obtained from in vitro digestibility studies using fecal inoculum

Autor: Mewa S. Dhanoa, Secundino López, Christopher D. Powell, Ruth Sanderson, Jennifer L. Ellis, Jo-Anne M. D. Murray, Anna Garber, Barbara A. Williams, James France
Přispěvatelé: Natural Sciences and Engineering Research Council of Canada, Canada Research Chairs, López, Secundino, López, Secundino [0000-0001-6267-683X]
Rok vydání: 2021
Předmět:
Zdroj: Animals
Volume 11
Issue 4
Animals : an Open Access Journal from MDPI
Animals, Vol 11, Iss 1069, p 1069 (2021)
Digital.CSIC: Repositorio Institucional del CSIC
Consejo Superior de Investigaciones Científicas (CSIC)
Digital.CSIC. Repositorio Institucional del CSIC
instname
ISSN: 2076-2615
Popis: 14 páginas, 2 tablas, 6 figuras.
Gas production profiles typically show a monotonically increasing monophasic pattern. However, atypical gas production profiles exist whereby at least two consecutive phases of gas production or additional extraneous features that distort the typical profile are present. Such profiles are more likely to occur with the use of a fecal inoculum and are much less well described. The presence of multiple phases or non-descript extraneous features makes it difficult to apply directly recommended modeling approaches such as standard response functions or classical growth functions. To overcome such difficulties, extensions of the Mitscherlich equation and a numerical modeling option also based on the Mitscherlich are explored. The numerical modeling option uses an estimate of relative rate obtained from the smoothed data profile and an estimate of maximum gas produced together with any lag time information drawn from the raw data to construct a simple Mitscherlich equation. In summary, this article illustrates the analysis of atypical gas production profiles obtained using a fecal inoculum and explores the methodology of numerical modeling to reconstruct equivalent typical growth-like trends.
This research was funded in part by The Canada Research Chairs program, grant number 045867 (Natural Sciences and Engineering Research Council of Canada, Ottawa).
Databáze: OpenAIRE
Pro tento záznam nejsou dostupné žádné jednotky.