Evaluation of distiller’s dried grains with solubles in aquafeeds: a review

Abstract The aquafeed industry faces many challenges, including reducing the cost of feed by reducing the quantity of fish meal and soybean meal and researching to replace them with other ingredients lower in cost. Furthermore, new low-cost feeds must improve growth and feed utilization while also ensuring fish health. During the past few decades, researchers have shown one of the low-cost and with appropriate nutritional value alternative protein sources to replace fish meal (FM) or soybean meal (SBM) is dried distiller’s grains with solubles (DDGS). Recently, the production of grain-based ethanol as a fuel additive has been increasing as the demand for biofuel has increased, and lessening dependency on fossil fuels has resulted in a dramatic rise in the amount of grains used for ethanol. DDGS are the primary co-product of dry-grind fuel ethanol plants. DDGS has the advantages of having high protein, fat, phosphorus, yield, and low cost. These valuable particles attributed to DDGS have raised controversy amongst feed nutritionists as to how they can proficiently replace fish meal or soybean meal. It has been discovered that DDGS can be replaced with fish meal or soybean meal without affecting growth. Therefore, the present review discusses the effects of dietary DDGS application in the fish feed formulation, the best dietary presence, the possible advantages in fish health, nutrient retention, and the economic benefits of DDGS application in Aquafeeds.