The aim of the study was to investigate the possible use of mussels and algae wastes processed intohigh quality and safe food additives for the poultry. Black sea mussels (Mytilus galloprovincialisLamarck) and algae (phyllophora) were used as a waste product. The samples were taken from thehouseholds where mussels were initially processed at an agar plant. Waste samples and derivedadditives were tested for bacterial load, quality and chemical composition. In addition, proteinmineraland mineral additive were produced from waste products. Their possible uses in poultrymeat production were investigated. It was found that contamination with mesophilic bacteria andfacultative anaerobic organisms fluctuates within current requirements. Sometimes evensubstantially exceeds them depending on waste storage conditions. The contamination with E. coli,Salmonella, and other pathogenic microorganisms is also observed within existing requirementsor exceeding them. Chemical analysis reveal that intact mussels consist of average 80% wet matterand 20% dry matter, 9.4% protein, 1.2 % fat, 4.8 % nitrogen free extractive substances, 0.18% ash,24.5 g/kg calcium, 1.0 g/kg phosphorus, 0.18 g/kg potassium. On the other hand, mussel valvesconsist of % 12 wet matters and % 88 dry matters, 37.2g/kg calcium, 0.2 g/kg phosphorus, 0.1 g/kgpotassium. Use of additives in poultry production positively affects development and slaughter-outpercentage and does not reduce the quality and biological value of their meat. As a conclusion itcan be said that non-waste product from processed mussels represent a kind of raw material whichcan be used as food additive in animal industry after being technologically processed.