Metabolizable energy and nitrogen retention of ration of super native chicken contains fermented catfish waste

The study aimed to explore fermented catfish waste product (FCWP) by microbes L. paracasei, B. subtilis, and S. cerevisiae as a substitute for fishmeal with observations on metabolizable energy and nitrogen retention of the ration. The study used 24 14-week-old Super Native Chickens which were kept for 14 days. The experimental design used was a Complete Random Design with 6 treatments and 4 replicates. The treatments given were: R0 (basal ration, 15% protein and ME 2,750 kcal/kg); R1 (basal ration, containing 5% FCWP); R2 (basal ration, containing 10% FCWP); R3 (basal ration, containing 15% FCWP); R4 (basal ration, containing 20% FCWP); and RS (Ration, 18% protein and ME 2,750 kcal/kg). The results showed that the addition of FCWP by consortium microbes had a real effect (P<0.05) on metabolizable energy and nitrogen retention. The use of FCWP, as much as 10% in the ration formula, provides the highest metabolizable energy and nitrogen retention value in Super Native Chickens.