Largemouth bass Micropterus salmoides is a high-value sportfish and foodfish that is increasingly cultured in the US and other countries. Considerable research has been conducted to determine the nutrient requirements of largemouth bass and facilitate development of practical feeds to optimize fish performance and production economics. Formulation of feeds with environmentally benign ingredients (including many plant products) is increasingly preferred, though this can be challenging with carnivorous species. Minimal use of marine fish meal and oil in feeds is often required to attain certifications that can enhance marketability and long-term production sustainability of cultured fish. Plant ingredients modified to increase protein and decrease anti-nutritional factors have shown promise in bass feeds, as well as alternative animal ingredients such as insect meals. In addition, inclusion of feed additives such as enzymes, prebiotics, probiotics, palatants and others can increase feed intake and nutrient utilization of feeds to improve the overall nutrient utilization, cost-effectiveness and environmental impact of feeds for largemouth bass.
This presentation will provide an overview of the nutrient requirements and feeding practices for largemouth bass and suggest additional research needs to address industry-relevant knowledge gaps for scientists and producers.