Assessment of Water Quality, Growth of Penaeus vannamei, and Partial Budget in Super-Intensive BFT and RAS: A Comparison Between Sustainable Aquaculture Systems

Bianca de Oliveira Ramiro, Wilson Wasielesky, Otávio Augusto Lacerda Ferreira Pimentel, Taozhu Sun, Ethan McAlhaney, Stephen Urick, Fernando H. Gonçalves (), Jonathan van Senten, Michael H. Schwarz and Dariano Krummenauer
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Bianca de Oliveira Ramiro: Estação Marinha de Aquacultura, Instituto de Oceanografia, Universidade Federal do Rio Grande, Rio Grande 96210-030, RS, Brazil
Wilson Wasielesky: Estação Marinha de Aquacultura, Instituto de Oceanografia, Universidade Federal do Rio Grande, Rio Grande 96210-030, RS, Brazil
Otávio Augusto Lacerda Ferreira Pimentel: Estação Marinha de Aquacultura, Instituto de Oceanografia, Universidade Federal do Rio Grande, Rio Grande 96210-030, RS, Brazil
Taozhu Sun: Virginia Seafood Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University, Hampton, VA 23669, USA
Ethan McAlhaney: Virginia Seafood Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University, Hampton, VA 23669, USA
Stephen Urick: Virginia Seafood Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University, Hampton, VA 23669, USA
Fernando H. Gonçalves: Virginia Seafood Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University, Hampton, VA 23669, USA
Michael H. Schwarz: Virginia Seafood Agricultural Research and Extension Center, Virginia Polytechnic Institute and State University, Hampton, VA 23669, USA
Dariano Krummenauer: Estação Marinha de Aquacultura, Instituto de Oceanografia, Universidade Federal do Rio Grande, Rio Grande 96210-030, RS, Brazil

Sustainability, 2024, vol. 16, issue 24, 1-13

Abstract: This study evaluated water quality, growth, and partial budget analysis (PBA) for Penaeus vannamei , comparing super-intensive Biofloc Technology (BFT) and Recirculating Aquaculture Systems (RAS). The 69-day trial used 100 L units with two treatments (RAS and BFT), each with three replicates. Shrimp were initially reared in a 30-day nursery to a weight of 0.10 ± 0.04 g and then stocked at 500 shrimp m −3 . Biofloc growth in BFT was promoted by maintaining a C:N ratio of 15:1, adding dextrose when total ammonia nitrogen (TAN) reached 1 mg L −1 . Probiotics (3 g m −3 ) were administered daily to both groups. TAN levels in BFT initially spiked but stabilized after 36 days. Vibrio abundance was initially higher in RAS, but by the end of the trial, it was higher in BFT. Final weight, weekly growth ratio, and yield were greater in BFT, whereas feed conversion ratio (FCR) and water use were higher in RAS. Survival rates were 83.33% in BFT and 88% in RAS. BFT achieved a superior net benefit/cost compared to RAS. Although RAS more effectively controlled nitrogenous compounds, BFT exhibited better growth performance, with higher final weights, lower FCR, and better Vibrio management. The partial budget analysis indicated an economic advantage for BFT, with a net positive benefit of $2270.09 when shifting from RAS to BFT due to lower operating costs and higher shrimp yield. Among these two sustainable production systems, BFT was more productive while utilizing less natural resources.

Keywords: recirculating aquaculture system; biofloc; nitrogenous compounds; Vibrio; sustainable shrimp production (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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