Conclusion

In the United Sates, poultry production operations have increased in size and are regionally concentrated. Poultry manure is managed as liquid or solid, depending on the manure management system and bird type. Therefore, physicochemical properties of poultry manure constituents (N, P, and K, etc.) vary from within species, and among bird types. When properly managed, poultry manure provides beneficial nutrients for plant growth, and improves soil quality without harming the natural environment. The majority of poultry manure and wastewater is land-applied as organic fertilizer. A small portion of poultry manure is treated or processed for alternative uses, such as biogas and compost for specialty crops. Incineration of litter to produce electricity is being carried out in the United Kingdom. Co-combustion of poultry litter with coal is currently being investigated.

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