Zijlstra, R. T., Swift, M. L., Wang, L. F., Scott, T. A. and Edney, M. J. 2011. Short Communication:Near infrared reflectance spectroscopy accurately predicts the digestible energy content of barley for pigs. Can. J. Anim. Sci. 91: 301-304. Density, chicken apparent metabolizable energy (AME), and near infrared reflectance spectroscopy (NIRS) were tested to predict the widely varying swine digestible energy (DE) content of barley. The DE content of 39 barley samples ranged from 2686 to 3163 kcal kg-1 (90% DM) in grower pigs. The R2 between DE content and density (0.14) and broiler chicken AME content (0.18 and 0.56, without and with enzyme, respectively) was low. In contrast, the coefficient of determination to predict swine DE content for ground barley samples using NIRS was respectable for external validation (R2=0.74) and internal cross validation (1-VR=0.79), but more robust calibrations should be developed for commercial application.
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1 June 2011
Short Communication: Near infrared reflectance spectroscopy accurately predicts the digestible energy content of barley for pigs
R. T. Zijlstra,
M. L. Swift,
L. F. Wang,
T. A. Scott,
M. J. Edney
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Canadian Journal of Animal Science
Vol. 91 • No. 2
June 2011
Vol. 91 • No. 2
June 2011
barley
digestible energy
énergie digestible
near infrared reflectance spectroscopy
NIRS
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