Development of a mathematical model to predict pool sizes and rates of digestion of 2 pools of digestible neutral detergent fiber and an undigested neutral detergent fiber fraction within various forages.
NDF digestibility
forages
modeling
rates of digestion
Journal
Journal of dairy science
ISSN: 1525-3198
Titre abrégé: J Dairy Sci
Pays: United States
ID NLM: 2985126R
Informations de publication
Date de publication:
Jan 2019
Jan 2019
Historique:
received:
22
05
2018
accepted:
22
09
2018
pubmed:
19
11
2018
medline:
28
2
2019
entrez:
19
11
2018
Statut:
ppublish
Résumé
The digestion of neutral detergent fiber treated with amylase and sodium sulfite and ash corrected (aNDFom) has been described as a single digestible pool and a fraction undigested in ruminants. Further, most models that predict rate and extent of digestion of aNDFom in the rumen assume first-order processes, in which the rates of digestion and passage are proportional to the pool size of aNDFom consumed and digested. Data exist demonstrating that the undigested fraction of aNDFom is not well described by a fixed coefficient and varies by maturity and agronomic growing conditions of the plant. Thus, our objective was to improve the prediction of digestible aNDFom (pdNDF) and to quantify, using a minimum number of fermentation time points, 2 pools of digestible aNDFom, pdNDF
Identifiants
pubmed: 30447979
pii: S0022-0302(18)31066-X
doi: 10.3168/jds.2018-15102
pii:
doi:
Substances chimiques
Detergents
0
Dietary Fiber
0
Sulfites
0
Amylases
EC 3.2.1.-
sodium sulfite
VTK01UQK3G
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
351-364Informations de copyright
Copyright © 2019 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.