Prediction of starch and crude protein concentration of cereal and pea grains and their incubation residues from ruminal in situ studies using near-infrared spectroscopy. (Abstract)

Publication Type

Contribution to conference

Authors

Krieg J, Koenzen E, Seifried N, Steingaß H, Rodehutscord M

Year of publication

2016

Published in

Proceedings of the Society of Nutrition Physiology

Band/Volume

25/

Series/labeling

Berichte der Gesellschaft für Ernährungsphysiologie

ISBN / ISSN / eISSN

978-3-7690-4109-5

Page (from - to)

116 (100.)

Conference name

70. Tagung der Gesellschaft für Ernährungsphysiologie

Conference location

Hannover

Conference date

08.-10.03.2016

Keywords

cereal grains, crude protein, Erbse, Nah-Infrarotspektroskopie, Stärke

<p><span style="font-family: 'Arial',sans-serif; font-size: 10pt; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-ansi-language: EN-AU; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"><span style="color: #000000;">In situ incubations are widely used to investigate ruminal degradation characteristics of feedstuffs. Chemical analysis is time consuming and expensive. Availability of a fast and cheap method like near infrared spectroscopy (NIRS) to predict nutrient concentrations would be advantageous. Due to sample matrix effects and different methods of starch (ST) analysis in use, none of the available NIRS calibrations is suitable for application to incubation residues. Crude protein (CP) and ST concentrations of incubation residues vary to a much greater extent than in grains and are in most cases much lower. Therefore the objective was to establish NIRS calibrations to predict the ST and CP concentration of cereal and pea grains and their in situ incubation residues. We also compared the degradation characteristics calculated based on NIRS prediction with those obtained by chemical analyses.</span></span></p>