Fruit processing by‐products in the aquafeed industry: A feasible strategy for aquaculture sustainability

Abstract

The aquaculture sector is steadily growing due to the increasing demand for healthy and cheap animal protein sources. Consequently, the high demand for nutritionally balanced aquafeed increases, but requires sustainable and feasible feed ingredients. However, the high cost of fish and soybean meals opens the door to looking for suitable non‐traditional feed ingredients. The processing of fruits results in high amounts of waste and by‐products, which are risky for the environment but rich in nutritional value. Recycling fruit waste in aquafeed is successfully applied and results in high growth performance, productivity and well‐being of aquatic animals. Fruit by‐products are also potential functional feed additives devoted to their high content of polyphenols, flavonoids, vitamins, minerals, polysaccharides and peptides. As functional components, fruit by‐products enhance the antioxidative and immune responses of aquatic animals and increase their tolerance for biotic and abiotic stressors. In light of reducing antimicrobial chemicals in aquaculture to mitigate antimicrobial resistance, dietary feed additives extracted from fruit by‐products can be used as eco‐friendly substances. The investigations involved in evaluating the incorporation of fruit by‐products and their derivatives in aquafeeds are explored in this review. An overview of the possibility of using non‐traditional plant products in aquaculture as a feasible and sustainable concept is addressed in this review. Academic knowledge with enough information for more development and research to maximise the utilisation of fruit by‐products in the aquafeed industry is also enriched.

The Potential of Fermented Water Spinach Meal as a Fish Meal Replacement and the Impacts on Growth Performance, Reproduction, Blood Biochemistry and Gut Morphology of Female Stinging Catfish (Heteropneustes fossilis)

“…Nevertheless, poor reproductive performance, lack of quality feed, and husbandry requirements are major issues in managing the female stinging catfish broodstock culture. Therefore, aquaculture nutritionists consistently search for novel, high-quality alternatives of plant and animal origin [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. Moreover, [ 16 , 17 , 18 ] it has been reported manipulating the nutrient composition of broodfish diets improves spawning response, lowers the number of broodfish required to achieve production goals, and enhances egg production and quality.…”

Recent Advances, Challenges, Opportunities, Product Development and Sustainability of Main Agricultural Wastes for the Aquaculture Feed Industry – A Review

“…Fruit processing wastes and products were estimated to be approximately 100 million tonnes, and management has become challenging for industrial players (Fierascu et al, 2020;Marić et al, 2018). Studies have shown that fruit processing wastes and by-products are promising supplements for aquaculture species due to the presence of bioactive compounds and exogenous enzymes (Dawood et al, 2022;Habotta et al, 2022). For instance, banana peel flour incorporated with fish feed 5% promoted the health of rohu, L. rohita (Giri et al, 2016).…”

Towards achieving circularity and sustainability in feeds for farmed blue foods

“…yeast, malt sprouts, spent brewers grains) 78–80 . Some ingredients which could be circular source of additives such as spent coffee grains, fruit and vegetable byproduct 73,81 . Besides providing nutrients for downstream ingredient production (e.g.…”