Abstract

The poultry sector presents a positive growth trend in many countries, because of the world population raiser, which leads to an increase in the volume of waste and emissions generated. This means new management and treatment challenges [1]. Poultry industry waste includes a mixture of excrement (manure), bedding material (wood shavings, straw ...), food debris, dead birds, broken eggs, feathers, etc. It is commonly referred as a chicken manure. This chicken litter has a high value in nutrients (nitrogen, phosphorus and potassium), and has been used as an organic fertilizer, using techniques of direct dumping on land [2]. However, excessive application of this material can result in too high enrichment of water nutrients, resulting in eutrophication, spread of pathogens, and generation of toxic substances, air pollution and emissions of greenhouse gases [3].