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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2011 > Volume 10 Number 9 > Ronald A. Holser and Samantha A. Hawkins

Measurement of Lipid Supplements in Poultry Feed by Infrared Spectroscopy

Ronald A. Holser and Samantha A. Hawkins
Quality and Safety Assessment Research Unit, United States Department of Agriculture, 950 College Station Road, Athens, GA 30605, USA
Abstract :

Rapid measurement of a fatty acid supplement in poultry feed formulations was performed using near Infrared (NIR) spectroscopy with chemometric analysis. A standard feed formulation was amended with up to 10 wt% fatty acid supplement containing Docosahexaenoic Acid (DHA) and scanned from 10,000 cm-1 to 4000 cm-1. Spectra were evaluated by Principal Component Analysis (PCA) to detect outliers followed by Partial Least Square (PLS) regression. Models were developed with first derivative spectra. A typical dataset of 36 spectra was subdivided with 30 spectra used for model calibration and 6 spectra for the validation set. The PLS model produced a regression coefficient of 0.98314 with an RMSEC value of 0.44772. This technique provided a rapid method to analyze the amount of fatty acids in supplemented feeds.


Keywords :
Chemometrics, poultry, rations, spectroscopy

Date Deposited : 23 Feb 2015 09:59

Last Modified : 23 Feb 2015 09:59

Official URL: http://www.pjbs.org

Volume 10, Number 9, - 2011 , ISSN 1682-8356

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