Fermentation Using Mold to Improve the Quality of Fish Feed

Aquaculture

Fermentation using a mold is one method that can be used to increase the nutritional value of feed. The application of mold fermentation has been shown to increase the crude protein content, reduce the crude fiber content and increase the buoyancy of fish feed. Types of molds that can be used in fermenting feed ingredients include Aspergillus niger, Trichoderma spp. and Rhizopus sp. Fermentation methods that can be used are submerged culture fermentation and solid substrate fermentation. Substrate fermentation is mostly carried out because the volume of water in the fermentation process is lower, harvesting is easier and the remaining substrate in solid substrate fermentation still has nutritional value. Fermentation of feed ingredients using Trichoderma viride mold on fermented rice straw can increase the crude protein content from 4.65% to 6.65% and fiber content from 45.93% to 52.62%.

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