Besides using PKC as a partial replacement for SBM, it could also be used to substitute certain amount of corn in poultry feed as it contains moderate amount of energy together with protein. As the PKC comprises mainly of cell wall, through biological treatment of SSF could improve the digestibility and vitamin content, protein efficiency ratio and amino acid availability through the destruction of anti-nutritional factors of PKC achieved through to the occurrence of related enzymes (Marini et al., 2005). Selective enrichment technique was carried out to isolate PKC degrading microorganisms, such as Aspergillus niger and A. fumigatus from rotting PKC and the environment to ferment PKC through SSF (Marini et al., 2005). In their study, there was a reduction in NDF and ADF of fermented PKC with A. niger by about 30.39% and 14.58%, and SSF with A. fumigatus the reduction of NDF and ADF were 30.33% and 13.36%, respectively. Even though SSF of PKC using A. fumigates observed in the reduction of NDF and ADF this culture could not be used as inoculum because it was reported to be pathogenic to animals and humans (Marini et al., 2005).