The methane fermentation is a method to the utilization of organic matter which is formed during the agricultural production. In this method obtained an energy as the biogas in compounds. The research showed that the most gassing substrate was the poultry manure and the least gassing was the cattle manure. After adding young brown coal (MWB) can improve the gasification affect. Elaborated also an original method of research the floation and sedimentation of the charge and sludge.