Fish Viscera Silage: Production, Characterization, and Digestibility of Nutrients and Energy for Tambaqui Juveniles

Fish viscera can be an important source of protein and energy for aquafeed, its use contributes to circular aquaculture. The aim this study was produce acid fermented silage from fish determine their nutritional value the apparent digestibility coefficient nutrients juvenile tambaqui (Colossoma macropomum). An three silages with different sources carbohydrates (molasses, wheat bran, cassava waste) were produced 0.25% sorbic as antifungal in formulation. Silages presented average 55% dry matter, 62.9% lipids, 12% crude protein. Leucine lysine predominated essential amino acids silages. EPA DHA content 5.4 17.8 1.7 8.9 mg.g−1 respectively. (ADC) (indirect method) above 82% gross all formulations. ADCs similar silages, a maximum 92% level bran silage. bioconversion into makes it ingredient aquafeed that is well digested by juveniles.