Use of chicken feather meal fermented with in diets to increase the digestive enzymes activity and nutrient digestibility of silver pompano (Lacepede, 1801).

: Feather has the potential to be used as a fish feed ingredient because it has high protein content (80-85%), and is rich in amino acids arginine, leucine, isoleucine and valine. However, the protein consists mainly of keratin, which is classified as fiber that is difficult to digest. Therefore, to improve digestibility, the keratin protein is degraded using microbial .