Poult. Sci.
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Poult Sci 2008. 87:627-635. doi:10.3382/ps.2007-00308
© 2008 Poultry Science Association
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IMMUNOLOGY, HEALTH, AND DISEASE

Application of In-House Mortality Composting on Viral Inactivity of Newcastle Disease Virus

E. R. Benson*,1, G. W. Malone{dagger}, R. L. Alphin{dagger}, K. Johnson{dagger} and E. Staicu{ddagger}

* Department of Bioresources Engineering, and {dagger} Department of Animal and Food Sciences, University of Delaware, Newark 19716; and {ddagger} University of Agricultural Sciences and Veterinary Medicine Bucharest, Faculty of Veterinary Medicine, 050096, Bucharest, Romania

1 Corresponding author: ebenson{at}udel.edu

This paper summarizes the results from 3 simulated in-house catastrophic mortality composting experiments. Experiment 1 evaluated the impact of water-based foam mass depopulation on in-house composting of the carcasses and litter and showed that water-based foam improved windrow temperatures. Experiment 2 evaluated the impact of freezing samples on virus recovery from windrow compost tissue and the choice of tissue for virus sampling within the bird. Experiment 2 documented that freezing the samples had minimal impact on processing and that virus recovery was more consistent among inoculated breast meat than inoculated tracheas. Experiment 3 evaluated the impact of sawdust, straw, and sawdust-straw base layer litter material on in-house mortality composting. All litter materials were able to reach and maintain temperatures in excess of 60°C for multiple days. No viral hemagglutination activity was observed after d 2 during any of the 3 experiments.

Key Words: compost • windrow • in-house • inactivation • Newcastle disease virus






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