In a layer system, a typical laying hen will consume feed which contains kg N while producing approximately 250 eggs . In a broiler system, a typical broiler year ( birds sent 18 to market per year) will also consume kg N per year of which kg N is excreted and kg N are assimilated into body tissues . 18 The macronutrient and micronutrient (see appendix III) values provided strongly indicate that poultry manure is very rich in terms of nitrogen, phosphorus, and potassium, as well as some other elements. Poultry manure should not be considered a waste but should be considered.
