The effect of different synbiotic preparation strategies on water fertilization and zootechnical performance of Macrobrachium rosenbergii reared in the nursery stage

• Published in: Aquaculture international 2022-12, Vol.30 (6), p.3159-3178
• Main Authors: dos Santos, Robson Batista, Coelho-Filho, Petrônio Alves, Assunção, Chaiane Santos, dos Santos, Tais Nunes, da Silva, Josefa Honorio, Silva, Gênison Carneiro, Brito, Luis Otavio
• Format: Article
• Language: English
• Subjects: Biological fertilization; Biomedical and Life Sciences; Decapoda; Fermentation; Fertilizers; Freshwater & Marine Ecology; Freshwater crustaceans; Larvae; Life Sciences; Macrobrachium rosenbergii; Marine crustaceans; Microorganisms; Nitrogen compounds; Nursery grounds; Probiotics; Rice bran; Survival; Water quality; Zoology
• ISSN: 0967-6120; 1573-143X
• DOI: 10.1007/s10499-022-00955-y

The prawn Macrobrachium rosenbergii post larvae (10.01 ± 2.00 mg) were evaluated using a synbiotic system with different fermentation (anaerobic) and microbial respiration (aerobic) strategies after 35 days. Rice bran, a mix of probiotic microorganisms, alkalizing agents, and water were used in the preparation of the synbiotic. There were five treatments in quadruplicate, consisting of the following: T12|12 = 12 h anaerobic and 12 h aerobic; T12|24 = 12 h anaerobic and 24 h aerobic; T24|0 = 24 h anaerobic; T24|12 = 24 h anaerobic and 12 h aerobic; T24|24 = 24 h anaerobic and 24 h aerobic. The prawns were fed four times a day (40% crude protein) and the main variables of water quality and prawn growth were evaluated. The synbiotic preparation strategies used did not influence the stabilization time of nitrogen compounds in water. There were no differences in the survival and the water quality variables, which remained adequate for the species. For the variables final average weight (mg) and yield (gm −3 ), treatments T24|24 (221.3 ± 22.0 and 195.4 ± 14.6) and T12|24 (218.2 ± 27.6 and 196.2 ± 33.4) were higher than 24|00 (176.1 ± 24.5 and 151.3 ± 21.6). Thus, it is concluded that a longer preparation time of the fertilizer, especially contemplating the anaerobic and aerobic stages, can promote greater performance of the reared prawns.