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Caged Layer Manure Management on Flies, Water and Nitrogen Levels - Case Studies of Current Technologies

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

Citation:  Paper number  034128,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.13883) @2003
Authors:   H. M. Keener, D. L. Elwell
Keywords:   Ammonia, emissions , flies, manure, nitrogen, poultry

Results of studies of 3 multi-million bird caged layer operations are presented. Operation 1 had 4+ million layers. Studied were cage layer and pullet houses using deep pit storage with no turning or in situ turning with a Frontier turner. Data collected in the spring and summer months showed a dryer product with more uniform moisture (30% vs. 40% in pullet houses) could be produced by turning windrows. Self heating led to temperatures above 40 oC in the turned windrows in both the pullet and layer houses. Times of occurrence of the high temperatures were not predictable, but did occur as pile depth increased beyond 20 cm and while moisture was above 40%. Recommendations were developed on how to use in situ turning as a part of a multifaceted approach to fly control and manure management on poultry farms. Operation 2 was a 1.6 million caged layer poultry facility using belt/composting and deep pit. Results showed clear advantages of belt/composting over conventional deep pit systems with total NH3 emissions 1/2 of conventional cage layer systems. Flies were not significantly present in belt/compost system. Operation 3 was a 2.5 million bird operation in 35 houses and a large Quonset building for the storage of manure after it was removed (1 year) from the deep pit laying house. Manure within each house was air dried using a combination of pit fans and exhausting air from the pit storage area. Results showed a product under 25% moisture, w.b., with few fly larvae, being generated within the laying houses. Chemical analysis of ash and nitrogen content of materials into and out of storage are presented for 3 systems.

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