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ARS Home » Plains Area » Las Cruces, New Mexico » Range Management Research » Research » Publications at this Location » Publication #206076
Title: Photoluminescence spectroscopy for the discernment of plants within animal diets

Author
item RAYSON, GARY
item OBEIDAT, SAFWAN
item Anderson, Dean
item LANDAU, SERGE
item GLASSER, T

Submitted to: Proceedings of Pittcon Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 10/17/2006
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Identification of different animal diets of free ranging herbivores is of much interest. Spectroscopic probes offer the potential for real-time analyses compared to microphitological procedures. The inherent multi-dimensionality of photoluminescence spectroscopy (i.e., fluorescence and phosphorescence) is a significant benefit for the analysis of chemically complex samples. Unfortunately, analysis of multi-dimensional data requires the use of algorithms other than simple linear regression at a single wavelength. To evaluate the utility of multi-dimensional luminescence spectroscopy for animal diet determinations, the excitatin-emission spectral signatures of each of seven diet components (i.e., diet supplement concentrate, Pistacia lentiscus, Phylirea Latifolia media, Pinus Brutia, alfalfa hay and clover hay) were acquired. Post-digested diet samples (i.e., feces) resulting from each hay component were also included.