Recria de rã-touro (Rana catesbeiana) em tanques-rede alojados em viveiros de tilápia

Sousa, Rodrigo Morgado Ramalho de; Agostinho, Cláudio Ângelo; Oliveira, F. A.; Argentim, D.; Oliveira, L.C.; Wechsler, Francisco Stéfano; Agostinho, S. M. M.

doi:10.4321/s0004-05922010000100004

Cited by 5 publications

(2 citation statements)

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“…However, one polyculture study was developed with post-metamorphosis bullfrogs and tilapia in hapas in which good results were reported for both species, with the frogs using the surface environment and the tilapia being submerged in the hapa (Sousa et al 2010, Castro et al 2014.…”

Section: Introductionmentioning

confidence: 99%

Polyculture of bullfrog tadpoles and Nile tilapia fry

Sarturi

Heluy

Sarmiento

et al. 2021

An. Acad. Bras. Ciênc.

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Section: Introductionmentioning

confidence: 99%

Polyculture of bullfrog tadpoles and Nile tilapia fry

Sarturi

Heluy

Sarmiento

et al. 2021

An. Acad. Bras. Ciênc.

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“…Braga and Lima (2001) reached values of mean daily weight gain of 0.92 g at 20 ºC; 1.46 g at 25 ºC; and 1.40 g at 30 ºC. Sousa et al (2010) studied the performance of bullfrogs stocked in cages installed in tilapia ponds and fed with automatic dispensers for 60 days in the winter under a mean temperature of 18.1 ºC. Frogs presented an initial mean weight of about 105 grams, and by the end of the experiment reached a mean weight between 129 and 139 grams, with daily weight gain of 0.42 and 0.58 grams, respectively-values lower than those found in this study .…”

Section: Performance Of the Bullfrog (Lithobathes Catesbeianus) Rearementioning

confidence: 99%

Development of a water recirculating system for bullfrog production: technological innovation for small farmers

et al. 2016

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Despite the technological progress in frog farming, issues related to the environment, biosafety, and the use of technologies that minimise environmental impacts are frequently neglected by farmers. With the goal of developing a low-cost technology for reuse and preservation of water quality, an anaerobic filtering system combined with an aerobic filtering system was implemented in the grow-out sector in the Frog Culture Research Unit at Fundação Instituto de Pesca do Estado do Rio de Janeiro (FIPERJ). The filtering system received the effluent from six pens of frogs that were populated with 362 frogs in different development phases. The efficiency of the filtering system was evaluated by an analysis of the water before and after passing through the filters. In addition to the standards of water quality, the animals' performance was also observed through monitoring rates of survival, weight gain and feed conversion ratio. The results showed the effectiveness of the filtering system by removing organic matter, on average 87%. The values of total ammonia and non-ionisable reached 1.04 and 0.004 mg/L, respectively. Also, frogs subjected to the system presented satisfactory rates of weight gain and a high survival rate (97%).Index terms: Frog farming; effluent treatment; environmental preservation; local development. RESUMOApesar da evolução tecnológica da ranicultura, ainda é possível perceber que as questões voltadas para o meio ambiente, biossegurança e emprego de tecnologias que reduzam o impacto ambiental, são frequentemente ignoradas pelos criadores. Com o objetivo de desenvolver uma tecnologia de baixo custo para reuso e preservação da água foi implantado um sistema de filtragem anaeróbia, acoplado à filtragem aeróbia, no setor de engorda inundado do ranário experimental da Fundação Instituto de Pesca do Rio de Janeiro (FIPERJ). O sistema de filtragem recebeu o efluente de seis baias de engorda. A eficiência do sistema foi avaliada, por meio da análise da água antes e depois da passagem nos filtros. Além dos padrões de qualidade da água foi observado o desempenho dos animais, por meio das taxas de sobrevivência, ganho de peso e conversão alimentar. Os resultados obtidos evidenciaram a eficiência do sistema, em média foram removidos 87% da matéria orgânica. Os valores médios de amônia total e amônia não ionizável, após a filtragem aeróbia, foram respectivamente 1.04 e 0.004 mg/L. Conclui-se, ainda, que as rãs submetidas ao sistema apresentaram taxas satisfatórias de ganho de peso, conversão alimentar e sobrevivência (97%).Termos para indexação: Ranicultura; tratamento de efluente; preservação do ambiente; desenvolvimento local.

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