Okara is a common by-product, which is a residue produced during the processing of soybeans. In some areas, okara is commonly used as feed, and fish is one of the animals that can use okara as feed. However, there are a few things to be aware of when feeding fish dregs, otherwise it may cause adverse effects on the health of the fish.
First of all, make sure that the okara is not moldy, spoiled or other harmful substances have been added. This is because these factors may affect the quality and safety of okara, which can negatively affect the fish. Therefore, before using okara, it should be carefully checked for color, smell, and texture to ensure that it is fresh and uncontaminated.
Secondly, okara needs to be fermented before it can be fed to the fish. This is because okara is high in protein and fiber, and direct feeding may cause indigestion or nutritional imbalance in the fish. Through fermentation, the protein and cellulose in okara can be broken down into smaller molecules, making it easier for fish to digest and absorb, and producing beneficial microorganisms that help improve the gut health of fish. The fermentation method is also very simple, you just need to put the okara in a container, add some water and a small amount of yeast powder or yogurt, stir well, cover the lid, and place it in a warm place to ferment for about a day.
Third, okara should be added in an appropriate amount when feeding fish. In general, the amount of okara should not exceed 20% of the total amount of feed, otherwise it may lead to indigestion or nutritional imbalance of the fish. This is because okara, although rich in protein and fiber, also lacks some essential nutrients such as fats, minerals, and vitamins. Therefore, it is best to mix okara with other feeds to provide a more complete range of nutrients.
Overall, okara is a good fish feed, but attention needs to be paid to the correct handling and use methods. Only in this way can the nutritional value of okara be fully utilized, while ensuring the health and growth of the fish.