Production cost of tambaqui (<i>Colossoma macropomum</i>) and tambatinga and tambacu hybrids in net cages

SILVA, Ana Carla Carvalho; BARROS, Adriana Fernandes de; POVH, Jayme Aparecido; CORREIA, Anatércia; MELO, Dayane Ellen Vaz de; INACIO, Elzira Carolina Brito Costa; ABREU, Janessa Sampaio de; FORNARI, Darci Carlos; CAMPOS, Cristiane Meldau de; SEGURA, Julio Guerra; CORRÊA FILHO, Ruy Alberto Caetano

doi:10.1590/1809-4392202301632

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ANIMAL AND FISHERIES SCIENCES | SHORT COMMUNICATION • Acta Amaz. 55 • 2025 • https://doi.org/10.1590/1809-4392202301632 linkcopy

Production cost of tambaqui (Colossoma macropomum) and tambatinga and tambacu hybrids in net cages

Custo de produção do tambaqui (Colossoma macropomum) e dos híbridos tambatinga e tambacu em tanques-rede

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The objective of this study was to determine the production cost of tambaqui (Colossoma macropomum) and the hybrids tambatinga (female tambaqui x male pirapitinga, Piaractus brachypomus) and tambacu (female tambaqui x male pacu, Piaractus mesopotamicus) produced in net cages within a 100-ha-surface reservoir over 402 days of cultivation. The effective and total operating cost for each genetic group was determined based on production performance data and operational costs gathered throughout the experimental period. Tambaqui showed a 32.3% and 48.3% lower average total operating cost compared to tambatinga and tambacu, respectively. The lower production cost of tambaqui is attributed to its superior productivity, and is therefore considered the most promising genetic group under the evaluated conditions.

KEYWORDS:
Amazonia; economic viability; hybrid fish; Piaractus brachypomus; Piaractus mesopotamicus; native fish

Indicator	Rearing phase
Indicator	I	II	III
Stocking density (fish m3)	103	34	17
Net cages per genetic group	3	9	18
Initial quantity of fisha	1953	1855	1818
Final quantity of fisha	1855	1818	1800
Apparent feed conversion ratiob	1.26	1.92	1.92
	Tambaqui
Initial average weight (kg)c	0.0733	0.2660	0.9436
Final average weight (kg)c	0.2660	0.9436	1.7641
Estimated feed consumption (kg)d	441.35	2346.31	2803.04
	Tambatinga
Initial average weight (kg)c	0.1213	0.3672	0.6868
Final average weight (kg)c	0.3672	0.6868	0.9060
Estimated feed consumption (kg)d	559.76	1089.50	733.82
	Tambacu
Initial average weight (kg)c	0.0662	0.2160	0.2764
Final average weight (kg)c	0.2160	0.2764	0.6548
Estimated feed consumption (kg)d	341.95	195.49	1298.20

Variable	Unit	Unit value (BRL)	Total units per cycle	Total cost (BRL)^l	Cost per genetic group (BRL)^m
Variable	Unit	Unit value (BRL)	Total units per cycle	Total cost (BRL)^l	Tambaqui	Tambatinga	Tambacu
Labor + fees^a	Montlhy fee	1407.61	13.40	18861.97	6287.32	6287.32	6287.32
Occasional labor	Daily wage	89.99	20.00	1799.80	599.93	599.93	599.93
Fuel (Gasoline)	l	4.12	362.00	1491.44	497.15	497.15	497.15
Tambaqui fingerlings^b	100 fish	439.41	2.00	878.82	878.82	-	-
Tambatinga fingerlings^b	100 fish	439.41	2.00	878.82	-	878.82	-
Tambacu fingerlings^b	100 fish	439.41	2.00	878.82	-	-	878.82
Feed 4-6 mm (Phase I)^c	kg	1.86	1343.10	2498.17	820.90	1041.20	636.00
Feed 6-8 mm (Phase II)^c	kg	1.86	3631.30	6754.22	4364.10	2026.50	363.60
Feed 10-12 mm (Phase III)^c	kg	1.86	4835.10	8993.29	5213.60	1364.90	2414.60
Operating expenses^d				43035.34	18661.82	12695.82	11677.42
Occasional expenses^e				860.71	373.24	253.92	233.55
Maintenance^f	Montlhy fee	291.74	13.40	3909.36	1303.12	1303.12	1303.12
Effective operating cost (EOC)^g				47805.41	20338.18	14252.86	13214.09
Depreciation^h	Montlhy fee	1090.55	13.40	14613.39	4871.13	4871.13	4871.13
Total operating cost (TOC)ⁱ				62418.80	25209.31	19123.99	18085.22
Economic indicators
EOCavg^j	BRL kg^-1				6.40	8.74	11.21
TOCavg^k	BRL kg^-1				7.94	11.73	15.34

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Instituto Nacional de Pesquisas da Amazônia Av. André Araujo, 2936 Aleixo, 69060-001 Manaus AM Brasil, Tel.: +55 92 3643-3030, Fax: +55 92 643-3223 - Manaus - AM - Brazil
E-mail: acta@inpa.gov.br

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[TFN1] ^a
Estimated values assuming mortalities of 5%, 2%, and 1% in phases I, II, and III, respectively.

[TFN2] ^b
Apparent feed conversion ratio = apparent feed consumption per weight gain. Apparent feed consumption corresponds to the provision of feed until apparent satiety. Values applied to the three genetic groups, within each phase.

[TFN3] ^c
Source: Silva et al. (2022).

[TFN4] ^d
Within each phase: Estimated feed consumption = total weight gain x apparent feed conversion ratio; Total weight gain = total final biomass - total initial biomass; Total final biomass = final average fish weight x final quantity of fish; Total initial biomass = initial average weight x initial quantity of fish.