Models describing ruminal in situ digestion as affected by the lag process and fractionation of substrate

Models describing ruminal in situ digestion are used frequently to evaluate the nutritive value of feedstuffs. Most models assume the existence of a soluble, a potentially digestible, and an indigestible fraction. Some models include a discrete lag time to account for a delay in disappearance when substrate is incubated in the rumen. The existence of a discrete digestion lag is unlikely to occur in vivo; therefore, a fully dynamic, two-compartment model was used to describe digestion. Substrate present in the first compartment was considered unavailable for digestion. Flow of substrate from the first to the second compartment was described by a first-order process and is likely affected by hydration of substrate and initial microbial attachment.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Animal Sciences

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• van Milgen, Jacob

Contributors dc:contributor

• Berger, Larry L.

• Agriculture, Animal Culture and Nutrition

Statement dc:rights

• Copyright 1992 van Milgen, Jacob

Language dc:language

eng

Identifier

AAI9215901
(UMI)AAI9215901

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20870