this study, the effect of an additive (calcium superphosphate) on gas ... of gases such as ammonia (NH3) and greenhouse gases (particularly methane, CH4) ...
Evaluation of calcium superphosphate as an additive to reduce gas emissions from rabbit manure Estellés F.*, Cambra-López M.*, Jiménez-Belenguer A.†, Calvet S.* *Institute of Animal Science and Technology. Universitat Politècnica de València. Camino de Vera s/n, 46022 Valencia, Spain. † Department of Biotechnology. Universitat Politècnica de València. Camino de Vera s/n, 46022 Valencia, Spain.
Abstract: Techniques to reduce the emission of air pollutants from livestock production are demanded. In this study, the effect of an additive (calcium superphosphate) on gas emissions from rabbit manure was investigated and compared with a control where no additive was used. Calcium superphosphate was applied at a rate of 100 g/m2 per week in a manure pit during 2 cycles of growing rabbits. Manure samples were collected weekly and then chemically and microbiologically analysed. Gas emissions (ammonia, carbon dioxide, methane and nitrous oxide) were determined in 2 open flux chambers. No differences were observed in gas emissions between the treated and control samples except for ammonia emissions, which were reduced by 33% when the additive was applied (P
