The article examines the problem of processing poultry waste using extrusion technology. Bird droppings contain elements necessary for plant nutrition. This chemical composition makes it a valuable organic raw material for use as organic fertilizer. However, manure requires processing before being introduced into the soil. The main goal of the study is to reduce the moisture content of the mixture of high-moisture poultry waste to a level sufficient for high-quality extrusion into fertilizer. Reducing the moisture content of the mixture is possible by mixing them with vegetable fillers. Litter components or plant waste were selected as fillers. As a result of measuring the moisture content of the components of the mixture, it was determined: poultry manure with litter (PP) turned out to be the least wet and can be used for processing by extrusion; bird droppings from young stock (PM) and bird droppings from adult birds (PV) can be used for extrusion processing when mixed with vegetable fillers in a ratio of 1: 1 and 1: 2, respectively.

The purpose of the research is the reduction of high-moisture poultry waste to a condition effective for high-quality manure extrusion. The idea of extrusion technology use for poultry waste is considered. Bird dropping is effective raw material to be used as organic fertilizer, containing elements necessary for plant nutrition. Before entering the soil, the waste requires processing. The working ability of a single-screw extruder is limited by moisture of the pro-cessed raw materials (15...30%). High-moisture poultry waste is poorly homogenized and does not provide an ef-fective porous structure of processed components at the exit from the extruder die. An effective design and techno-logical scheme of an extruder for wet poultry waste processing is proposed, involving mixing it with various fillers and drying it for extrusion to obtain a manure of the required quality. The main goal of the study is the limitation of liquid content in high-moisture poultry waste with fillers to a condition that ensures the production of effective organ-ic manure. The litter components or plant waste are selected as bulkier material. To ensure an effective work of the extruder in terms of its energy saving ability, the moisture content of the vegetative bulkier material should amount to 5...15%. Pre-grinding of bulkier material is to be provided for achieving the required particle size of the filler re-sulting in better moisture absorption. The development of the manure composition for energy saving technology was based on the selection of a effective ratio of the components to be mixed. As a result of the evaluation of the moisture content in mixture components, it was concluded that the bird dropping with litter is the least wet and can be processed using the proposed extruder without adding filler; bird dropping of young and adult birds are subject to extrusion, provided that they are mixed with vegetative bulkier material in the ratio of 1:1 and 1:2, respectively.

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