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MODEL FOR ESTIMATING POULTRY MANURE NUTRIENT EXCRETION: A MASS BALANCE APPROACH

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Pp. 296-302 in the Ninth International Animal, Agricultural and Food Processing Wastes Proceedings of the 12-15 October 2003 Symposium (Research Triangle Park, North Carolina USA), Publication Date 12 October 2003.  701P1203.(doi:10.13031/2013.15264)
Authors:   T.J. Applegate, L.P.V. Potturi, and R. Angel
Keywords:   Broiler chickens, Ducks, Laying hens, Manure, Poultry, Turkey

Planning of new animal facilities or expansion of current facilities often requires an estimate of nutrient excretion. Typically, the estimates used are published values by the American Society of Agricultural Engineers (ASAE), Midwest Plan Service (MWSP), or Natural Resources Conservation Service (NRCS). These estimates have not been recently updated to account for progress in bird strains, feeding programs, or management systems. Therefore, we have developed nutrient excretion estimates based on surveys of dietary formulation, average performance and published nutrient retentions of specific nutrients, namely nitrogen (N), phosphorus (P), and dry matter (DM). This model allows for a more accurate estimate of excretion based upon feed intake, feed nutrient concentration, and animal performance for each of the poultry specie during their productive life.

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