Today, with increased earth's emissions and its problems, the use of microorganisms to degrade these pollutants has been considered (7). The most of fungi that produce keratinases are pathogenic (7). Hence, many researchers have focused on the potential use of keratinase with bacterial origin (8). The studies have shown that Bacillus spp. have special advantages for the degradation of feather due to its safety and the capacity to secrete large amounts of keratinases directly into the medium (9). Biodegradation of feathers by this bacterium represents a method for improving the utilization of feathers as a feed protein. There are not any reported researches from Iran in the field of feather degradation by Bacillus spp.