Optimization of fish and plant production in tilapia-spinach aquaponics systems using black soldier fly larvae meal and mineral supplementation
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Abstract
Aquaponics is a sustainable food production system that combines aquaculture and hydroponics. Fishmeal is a common protein source in aquaponics feeds, but it is expensive and has environmental and ethical issues. Black soldier fly larvae (BSFL) are a promising alternative protein source that can be produced from organic waste. However, the optimal level of fishmeal replacement by BSFL meal and the effects of mineral supplementation on fish and plant growth, nutrient utilization, and microbial quality in aquaponics systems are not well understood. In this study, the researcher conducted three experiments to evaluate the effects of full-fat (FF) BSFL meal, defatted (DF) BSFL meal and mineral supplementation on tilapia-spinach aquaponics systems. The researcher found that FF or DF BSFL meal can replace up to 30% of fishmeal protein in tilapia-spinach aquaponics systems without compromising fish and plant growth, nutrient utilization, or microbial quality. Mineral supplementation can further enhance the performance of tilapia fed with FF or DF BSFL meal in aquaponics systems. This study provides valuable information for optimizing fish and plant production in tilapia-spinach aquaponics systems using BSFL meal and mineral supplementation as sustainable protein and mineral sources.
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