The waste produced after cultivating edible fungi using bacterial strains is known as bacillary dysentery. During the cultivation process, the mycelium breaks down the organic materials, significantly reducing the levels of crude fiber and lignin while increasing the content of crude protein and crude fat. As a result, the leftover material from mushroom cultivation is rich in nutrients. When properly fermented, it can be transformed into an excellent source of fish feed.
The fermentation process involves selecting clean, mold-free, and insect-free bacterial waste, then breaking it into smaller pieces. A proper amount of salt, superphosphate, urea, and water should be added to the mixture, along with a suitable quantity of a microbial starter culture. The mixture must be thoroughly combined, and the moisture level should be carefully controlled at around 60%. Once ready, cover the mixture with plastic film and seal it tightly for fermentation. For better results, you can also add a small amount of human or animal manure. The fermentation period usually lasts between 4 to 7 days, depending on the temperature—shorter when it's warm, longer when it's cold. After this time, the fermented material becomes a nutritious feed that can be used for fish.
According to some experienced fish farmers, feeding fish with this fermented bacterial waste has proven very effective. The fish show a strong appetite, grow faster, and suffer fewer diseases. This not only lowers the cost of fish farming but also improves overall profitability. Using this method is both eco-friendly and economically beneficial, making it a sustainable option for aquaculture.
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