Analysis of silage composition by near-infrared reflectance spectroscopy

James B. Reeves III; Timothy H. Blosser; V. F. Colenbrander

doi:10.1117/12.25072

1 February 1991 Analysis of silage composition by near-infrared reflectance spectroscopy

James B. Reeves III, Timothy H. Blosser, V. F. Colenbrander

Proceedings Volume 1379, Optics in Agriculture; (1991) https://doi.org/10.1117/12.25072
Event: Advances in Intelligent Robotics Systems, 1990, Boston, MA, United States

Abstract

Two studies were performed to investigate the feasibility of using near infrared reflectance spectroscopy (NIRS) with undried silages. In the first study silages were analyzed for major components (e. g. dry matter crude protein and other forms of nitrogen fiber and in vitro digestible dry matter) and short chain fatty acids (SCFA). NIRS was found to operate satisfactorily except for some forms of nitrogen and SCFA. In study two various methods of grinding spectral regions and sample presentation were examined. Undried Wiley ground samples in a rectangular cell gave the best overall results for non-dry ice undried grinds with wavelengths between 1100 and 2498 nm. Silages scanned after drying however produced the best results. Intact samples did not perform as well as ground samples and wavelengths below 1100 nm were of little use. 2 .

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James B. Reeves III, Timothy H. Blosser, and V. F. Colenbrander "Analysis of silage composition by near-infrared reflectance spectroscopy", Proc. SPIE 1379, Optics in Agriculture, (1 February 1991); https://doi.org/10.1117/12.25072

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