NOVELTY - Converting animal waste, in the form of waste slurry, to useful by-products involves: fragmenting the waste slurry for reducing binding of the fibrous materials contained within the waste slurry; mixing the fragmented waste slurry with minimal mixing turbulence for maintaining solids in suspension within the fragmented waste slurry; removing at least 75% of the solid content from the fragmented waste slurry to produce a solids output and a liquid output; and gasifying the solids output to produce methane/ethane gas and ash from the solids output.    USE - For converting animal waste, in the form of waste slurry, to produce useful by-products comprising methane/ethane gas and ash (claimed), treated water for irrigation, barn flushing, animal drinking water as well as organic solids for fertilizers and feedstock for gasification to produce gas for heat and electricity generation or for alternative fuel uses.    ADVANTAGE - The solid output produced by the method have a market value as fertilizer for spreading over crop producing fields, either under the control of the user or to be sold for use by others. In this regard, the method provides a financial return to the user in addition to the benefit of efficient animal waste removal and management. The method minimizes ash production and thus reduces the number of ancillary processes and removal steps for ash management while increasing the heating value and volume of the produced gas. The method produces 150 to 200 kilowatt-hours electrical energy. The user can choose to apply the produced energy for its own applications for added convenience and to reduce site operating costs, including overall animal waste removal and management costs. Alternately, the user can choose to market the produced energy and realize a financial return as an offset to system operation costs. The method produces a liquid output which is approximately 95% solid free and mostly nutrient free as a result of the waste slurry processing. Furthermore, due to the purity of the water produced, the high capital and operating costs of lagoons, irrigation and crop growing, is markedly reduced.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of an animal waste removal and management system.