Dr. Rodrigo Roubach
FAO Bolivia, Food and Agriculture Organization of the United Nations, Rome, Lazio, Italy
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Academic Career Length
16Years (2011-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications4 September 2013 in Reviews in Aquaculture
Journal Article
GBGuilherme Wolff Bueno
Guilherme Wolff BuenoAOAntonio Ostrensky
Antonio OstrenskyCCCarla Canzi
Carla Canzi
FMFlávia T. de Matos
Flávia T. de Matos
Rodrigo Roubach1 September 2017 in Pesquisa Agropecuária Brasileira
Journal Article
GBGuilherme Wolff Bueno
Guilherme Wolff BuenoDBDominique Bureau
Dominique BureauJSJames Owen Skipper-Horton
James Owen Skipper-HortonRodrigo RoubachFMFlávia Tavares de Mattos
Flávia Tavares de MattosFBFrancisco Ernesto Moreno Bernal
Francisco Ernesto Moreno BernalFlooded areas of reservoirs and artificial lakes have been increasingly used for fish production; however, the waste generated by aquaculture has become a concern for the sustainable development of this activity. One of the main strategies adopted by management and regulatory agencies is the use of hydrodynamic models that calculate the carrying or nutrient load capacity of a particular water body and the effect of fish farming. These models are precise in the development of optimal strategies for feeding and waste calculation. This review paper addresses this topic and describes the methodology developed for the analysis and simulation of the carrying capacity for fish production, based on the integration of the Fish-PrFEQ nutritional bioenergetic model and the hydrodynamic model of Dillon & Rigler. This methodology allows evaluating the real contribution of aquaculture waste and assists in the planning and management of aquaculture in these aquatic environments, besides enabling and encouraging producers and the aquaculture industry to use fish food with better nutritional quality and lower environmental impact.
29 May 2017 in Lakes & Reservoirs: Science, Policy and Management for Sustainable Use
Journal Article
CCCarla Canzi
Carla CanziRodrigo RoubachSBSimone F. Benassi
Simone F. Benassi
FMFlávia T. Matos
Flávia T. Matos
IMIrineu Motter
Irineu Motter
GBGuilherme W. Bueno
Guilherme W. Bueno
31 May 2023 in Heliyon
Journal Article
MBMaicon da Rocha Brande
Maicon da Rocha Brande
DSDavid Ferreira Lopes Santos
David Ferreira Lopes SantosNFNaor Silveira Fialho
Naor Silveira FialhoDPDanilo Cintra Proença
Danilo Cintra Proença
POPablo Gallardo Ojeda
Pablo Gallardo Ojeda
GBGuilherme Wolff Bueno
Guilherme Wolff Bueno +2
The aim of this study was to analyze the financial and economic risks of tilapia cage culture across different production water volumes (m³). The production water volumes evaluated were 10 to 50 thousand m³ (Small Volume, SV), 51 to 150 thousand m³ (Medium Volume, MV), 151 to 300 thousand m³ (Large Volume, LV), and >301 thousand m³ (Extra-Large Volume, ELV). Productivity and economic data were obtained from a commercial Nile tilapia cage farm with 232 net cages installed in a neotropical reservoir, in Brazil, from 2017 to 2019. Cost and profitability analyses, economic feasibility, and risk and sensitivity analyses were performed using a Monte Carlo simulation. The implementation of commercial tilapia cage farming relies mainly on feed prices. The initial investment demand is proportional to the size of the farms. On the other hand, MV, LV, and ELV tilapia farms showed the lowest financial risks despite the higher investments. These farms presented a medium-low risk at ≈39% probability, whereas the SV farm presented a medium to medium-high risk at 51.17% probability. Thus, fish farms with a production volume above 51 thousand m³ tend to be more profitable and have a ≈36% probability of low financial and economic risk with a Payback period of fewer than 10 years, mainly due to the lower feed costs per mass of fish produced. This study assists investors in choosing a better path toward a more viable and profitable activity.
1 July 2011 in Journal of Applied Aquaculture
Journal Article
RRRicardo Amaral Ribeiro
Ricardo Amaral Ribeiro
Rodrigo Otávio de Almeida OzorioSBSónia Batista
Sónia BatistaMPManoel Pereira-Filho
Manoel Pereira-Filho
EOEduardo Akifumi Ono
Eduardo Akifumi OnoRodrigo RoubachWe evaluated the effects of various dietary blood meal levels on the growth performance and body composition of pirarucu (Araipama gigas) juveniles. Fish (8.5 ± 0.4 g) were stocked into 24 tanks and fed for 60 days with eight isoproteic diets, having 0% to 21% incorporation of blood meal. Fish increased weight by six to 15 times from their initial weight. The highest body weights (117–135 g), growth rates (4%–5% BW/day), and protein retentions (19%–20%) were observed in fish fed 0% to 6% blood meal. Feed intake increased from 2.9% to 4.4% BW/day with increasing blood meal level. Feed conversion ratio (FCR: 1.0–1.1) did not vary among groups fed 0% to 6% blood meal (P < 0.001). However, when fish were fed more than 6% blood meal, FCR (1.3–1.7) and protein retention (11.1–13.7) deteriorated sharply. Lipid (7.7–11.7%) and energy (18.7–21.2 kJ/g) content increased with increasing blood meal levels up to 9%.
2 April 2025 in OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA
Journal Article
LBLian Valente Brandão
Lian Valente BrandãoAHANDERSON PAIXAO HUNGRIA
ANDERSON PAIXAO HUNGRIAFSFABRICIO NILO LIMA DA SILVA
FABRICIO NILO LIMA DA SILVAJJJosé Ribamar da Cruz Freitas Júnior
José Ribamar da Cruz Freitas JúniorTMThiago Marinho-Pereira
Thiago Marinho-PereiraRodrigo Roubach +1
This study evaluated the effects of including passion fruit (Passiflora edulis) and tucumã (Astrocaryum vulgare) residues in the diets of juvenile tambaqui (Colossoma macropomum) on apparent digestibility and growth performance. Three isoproteic and isocaloric diets were formulated: a control diet (without residues), one with 20% passion fruit residue, and another with 20% tucumã residue. The trial lasted 45 days and followed a completely randomized design with three replicates per treatment. Apparent digestibility coefficients (ADCs) of dry matter, crude protein, ether extract, and energy were assessed, as well as weight gain, feed conversion ratio, specific growth rate, and protein efficiency ratio. The fish fed the control diet achieved superior growth and nutrient digestibility. In contrast, the residue-based diets resulted in reduced performance and lower nutrient retention in the carcass, likely due to the high fiber content and low nutrient availability of the ingredients. These results suggest that the direct inclusion of 20% of these residues may not be suitable for juvenile tambaqui. However, these ingredients may become viable alternatives when used at lower levels or after proper processing, contributing to the sustainability of Amazonian aquaculture without compromising the nutritional adequacy of the diets.
About Me
Rodrigo Roubach leads and manages the FAO Country Office in Bolivia and represents FAO in the country of accreditation (Bolivia), developing, maintaining, and enhancing collaboration with the host government and other key stakeholders on development and humanitarian issues. Previous position was as a Senior Aquaculture Officer (Aquatic Animal Nutrition) in the Fisheries Division of the Food and Agriculture Organization of the United Nations in Rome, Italy. Also holds a position as Senior Scientist within the Brazilian government (MCT) since 1988.
Have worked in the Fisheries and Aquaculture sector for over 35 years, mainly in research, teaching, capacity building, development, and policy advice with the aquaculture segment at the Brazilian federal government and in international collaborations. Has experience in policy development of fishery resources, with main emphasis on aquaculture and fish farming. Has worked in the following areas: planning and sectoral development, aquaculture, fish farming, nutrition and feeding of fish. Has provided leadership to and coordinated several national and international aquaculture projects, advised a number of undergraduate and graduate students and authored a series of papers in peer-reviewed journals, acted as co-editor and author/co-author of several book chapters of scientific publications, and applied for two Brazilian patents, with over 90 scientific publications (Google Scholar) https://scholar.google.com.br/citations?user=hg WOmy0A