Abstract

The poultry manure is the excreta of the fattening chickens. The Mexican poultry industry generates 1.2 million tons of poultry manure used as fertilizer and for livestock feed. It is very common that it has copper (Cu), calcium (Ca), phosphorus (P), sodium (Na), potassium (K), magnesium (Mg), manganese (Mn), molybdenum (Mo), iron (Fe) and zinc (Zn). These minerals can be useful, but also harmful as the case may be, so the objective of this work is to quantify Cu, Fe, Zn, and Mo in poultry manure before, during and after the rainy season. For each period, 10 repetitions were analyzed and samples were taken from different poultry houses. Cu, Fe, Zn and Mo concentration in poultry manure were determined at the Soil Analysis Laboratory by atomic absorption spectrophotometry. Copper levels during the rainy season were higher than in the period without rain, and conversely to the iron levels. Zinc and molybdenum levels were equal during the rainy season and without rain.

Authors and Affiliations