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http://dx.doi.org/10.5333/KGFS.2019.39.4.258

Evaluation of Feed Values for Imported Hay Using Near Infrared Reflectance Spectroscopy  

Park, Hyung Soo (National Institute of Animal Science)
Kim, Ji Hye (National Institute of Animal Science)
Choi, Ki Choon (National Institute of Animal Science)
Oh, Mirae (National Institute of Animal Science)
Lee, Ki-Won (National Institute of Animal Science)
Lee, Bae Hun (National Institute of Animal Science)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.39, no.4, 2019 , pp. 258-263 More about this Journal
Abstract
Near infrared reflectance spectroscopy (NIRS) has become increasingly used as a rapid and accurate method of evaluating some chemical compositions in forages. The objective of this study was to evaluate the potential of NIRS, applied to imported forage, to estimate the moisture and chemical parameters for imported hays. A population of 392 imported hay representing a wide range in chemical parameters was used in this study. Samples of forage were scanned at 1 nm intervals over the wavelength range 680-2500nm and the optical data was recorded as log 1/Reflectance(log 1/R), which scanned in intact fresh condition. The spectral data were regressed against a range of chemical parameters using partial least squares(PLS) multivariate analysis in conjunction with spectral math treatments to reduced the effect of extraneous noise. The optimum calibrations were selected based on the highest coefficients of determination in cross validation(R2) and the lowest standard error of cross-validation(SECV). The results of this study showed that NIRS predicted the chemical parameters with very high degree of accuracy. The R2 and SECV for imported hay calibration were 0.92(SECV 0.61%) for moisture, 0.98(SECV 0.65%) for acid detergent fiber, 0.97(SECV 0.40%) for neutral detergent fiber, 0.99(SECV 0.06%) for crude protein and 0.97(SECV 3.04%) for relative feed value on a dry matter(%), respectively. Results of this experiment showed the possibility of NIRS method to predict the moisture and chemical composition of imported hay in Korea for routine analysis method to evaluate the feed value.
Keywords
Near infrared reflectance spectroscopy(NIRS); Chemical composition; Imported hay; Forages; Quality evaluation;
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Times Cited By KSCI : 3  (Citation Analysis)
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