Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

Improving the Efficiency of Lambari Production and Diet Assimilation Using Integrated Aquaculture With Benthic Species

Version 1 : Received: 3 August 2021 / Approved: 4 August 2021 / Online: 4 August 2021 (12:40:52 CEST)
Version 2 : Received: 21 August 2021 / Approved: 23 August 2021 / Online: 23 August 2021 (12:56:04 CEST)

A peer-reviewed article of this Preprint also exists.

Marques, A.M.; Boaratti, A.Z.; Belmudes, D.; Ferreira, J.R.C.; Mantoan, P.V.L.; Moraes-Valenti, P.; Valenti, W.C. Improving the Efficiency of Lambari Production and Diet Assimilation Using Integrated Aquaculture with Benthic Species. Sustainability 2021, 13, 10196. Marques, A.M.; Boaratti, A.Z.; Belmudes, D.; Ferreira, J.R.C.; Mantoan, P.V.L.; Moraes-Valenti, P.; Valenti, W.C. Improving the Efficiency of Lambari Production and Diet Assimilation Using Integrated Aquaculture with Benthic Species. Sustainability 2021, 13, 10196.

Journal reference: Sustainability 2021, 13, 10196
DOI: 10.3390/su131810196

Abstract

A single farmed fish species assimilates about 20% of the nutrients in the supplied diet. This study evaluated if the culture of complementary ecological-function species can recover nutrients dispersed into the water and transform them into high-valued biomass. A completely randomized experiment was designed with three treatments and four replications of each production system: monoculture of lambari (Astyanax lacustris); integrated aquaculture of lambari and Amazon river prawn (Macrobrachium amazonicum); and integrated aquaculture of lambari, Amazon river prawn, and curimbatá (Prochilodus lineatus). Fingerlings of lambari (0.8 ± 0.8 g) were stocked in twelve earthen-ponds (0.015 ha) at the density of 50 fish m-2. Eight ponds, were stocked with juveniles of Amazon river prawn (1.1 ± 0.2 g) at the density of 25 prawn m−2. Four of these eight ponds were stocked with curimbatá fingerlings (0.2 ± 0.1 g) at a density of 13 fish m-². Only lambari was fed twice a day with an extruded commercial diet. The experiment lasted 60 days when lambari attained commercial size. The inclusion of prawn increased the total species yield from 1.8 to 2.4 t ha-1 cycle-1 and reduced the feed conversion ratio (FCR) from 2.5 to 1.8. The inclusion of prawn and curimbatá increased the total yield to 3.2 t ha-1 cycle-1 and reduced the FCR to 1.4. Therefore, the integrated culture of lambari, prawn, and curimbatá improves the use of space, water, feed, and benthic species can recover the large quantity of nutrients accumulated in the bottom of lambari pond production, converting them into high-nutritional and monetary-valued biomass.

Keywords

Astyanax; Macrobrachium; Prochilodus; IMTA; resources optimization; integrated aquaculture

Subject

LIFE SCIENCES, Biotechnology

Comments (1)

Comment 1
Received: 23 August 2021
Commenter: Wagner Valenti
Commenter's Conflict of Interests: Author
Comment: We have updated table 1, improved the table captions, and revised some typo or style mistakes in the text.
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