Effect of feed enriched by products formulated from coconut water, palm sap sugar, and mushroom on the chemical composition of feed and carcass, growth performance, body indices, and gut micromorphology of giant gourami, Osphronemus goramy (Lacepède, 1801), juveniles

Background: Giant gourami, Osphronemus goramy (Lacepède, 1801) is the most important freshwater fish species produced by aquaculture in Indonesia. This study seeks to determine effects of various newly formulated products on amino acid composition diet and whole-body carcass, analyse growth coefficient, body indices, gut micromorphology. Methods: 100 g palm sap sugar was cooked 1.1 litre fresh water for fifteen minutes, create 1 11% solution (after some it had been boiled off). 2 litres coconut were then mixed with solution. this product added turn Aspergillus niger (CP2), Rhizopus oligosporus (CP3), Saccharomyces cerevisiae (CP4), while used as a control (labeled CP1). Aquafeed CP1, CP2, CP3, CP4, make diets labeled KP1, KP2, KP3, KP4. The dosage 150 ml/kg feed. Juvenile giant gourami (initial weight 50±0.25 length 13.2±0.07 cm) reared triplicate net frames (2×1×1 m; volume 1.5 m3) concrete pond stocking density 30 juveniles/net. Results: The results supported our hypothesis that different formulations have significant effect (P < 0.05) aquafeed nutrition feed utilization, micromorphology juveniles. thermal coefficient strongly correlated daily (r2 = 91%). KP3 contains higher concentration acids, which increased carcass quality more than other we tested. Conclusions: Diet total acids carcasses leads better gourami.