carried out tn assess the energy recovery potential from organic industrial by-products a cattle saughtering tacility. There are several processes to convert organic material to energy: technology of interest in this study was anaerobic digestion, the biological conversion of degradable organic material into methane The was initially confined to a full scale cattle slaughtering cility processing 3.28x of heads slaughtered in Ireland. The methane potential of dissolved air flotation sludge, paunche soft offat as well as a mixed waste stream(combination of individual waste streams) determined through a series of biochemical methane potential a says under mesophilic conditions. methane potential