Manure digesters are an excellent method for manure management, but the cost of the units is a limiting factor in the adoption of this technology. The advantages to these digesters include reduction of odour levels, reduction in pathogen levels, preservation of nutrients, reduction in greenhouse gas emissions, production of energy, and conservation of water. There are several projects underway to demonstrate and hopefully make them an economically viable option for producers. These projects include The Clear Green/SaskPower/CPIG at Cudworth, SK, the Alberta Research Council/Highmark Renewables feedlot manure treatment system in Alberta, and BioTerre in Manitoba. Digesters need to be of good design, good construction, and have knowledgeable and dedicated management.
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