Abstract
Since the 1950s, alfalfa hay sold in California has been priced based on total digestible nutrient (TDN) content estimated from either modified crude fiber (Meyer and Lofgreen, 1959) or acid detergent fiber (ADF). Residues from either procedure can vary in chemical composition for alfalfa hay harvested throughout the California growing season, which begins in February in extreme southern California and ends in October. Since energy based feeding standards are those by which others are judged, CaARPAS undertook this study to determine if metabolizable energy (ME) content of pure stand alfalfa hay could be determined via near infrared (NIR) spectrophotometry.
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References
Bath, D.L. 1985. Accuracy of the modified crude fiber and acid detergent fiber tests to predict TDN of alfalfa hay. Proc. Fifteenth California Alfalfa Symp. 45–49
Meyer, J.H. and G.P. Lofgreen. 1959. Evaluation of alfalfa hay by chemical analyses. J. Animal Sci. 1233–1242
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© 2013 Wageningen Academic Publishers The Netherlands
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Old, C. et al. (2013). Metabolizable energy of pure stand alfalfa hay estimated from near infrared spectra. In: Oltjen, J.W., Kebreab, E., Lapierre, H. (eds) Energy and protein metabolism and nutrition in sustainable animal production. Energy and protein metabolism and nutrition in sustainable animal production, vol 134. Wageningen Academic Publishers, Wageningen. https://doi.org/10.3920/978-90-8686-781-3_72
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DOI: https://doi.org/10.3920/978-90-8686-781-3_72
Publisher Name: Wageningen Academic Publishers, Wageningen
Online ISBN: 978-90-8686-781-3
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