Biodegradation of solid residues of quail production through composting

A trial was conducted to evaluate biodegradation of solid residues of quail production through composting. The composting cell was filled up with solid residues in a 3: 1 ratio (3kg of poultry litter: 1 kg of residues of quail production, including excreta+wasted feed+unedible eggs). Analysis of pH, moisture, total organic matter, total organic carbon, ash, total nitrogen, C/N ratio, total phosphorus, total calcium and total magnesium were performed during 90 days of composting. Treatment means were analyzed through regression. The results showed that composting in cells is an efficient method for biodegradation of solid residues of quail production. However, the C/N ratio of composting of a mixture of poultry litter and solid residues of quail production did not accomplish the Brazilian Normative Instruction No 25/2009 to be considered stabilized or biostabilized. The treatment of a mixture of poultry litter and solid residues of quail production through composting in cells needs more than 90 days to be used as an organic fertilizer. The volumetric container should not be used to humidify the biomass after the assemblage of composting cell.