| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
|
Data corrente: |
12/01/2023 |
|
Data da última atualização: |
13/02/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
OLIVEIRA, H. J. B. de; LIMA, A. F.; LAPA, L. C. F. da; OLIVEIRA, H. J. B. de; MATOS, F. T. de; NUÑER, A. P. de O. |
|
Afiliação: |
HYAGO JOVANE BORGES DE OLIVEIRA, INSTITUTO EDUCACIONAL SANTA CATARINA, Guaraí-TO; ADRIANA FERREIRA LIMA, CNPASA; LORHANE CAROLINE FERREIRA DA LAPA, UniCATÓLICA, Palmas-TO; HYGO JOVANE BORGES DE OLIVEIRA, UniCATÓLICA, Palmas-TO; FLAVIA TAVARES DE MATOS, CNPASA; ALEX PIRES DE OLIVEIRA NUÑER, UNIVERSIDADE FEDERAL DE SANTA CATARINA. |
|
Título: |
Effect of natural food consumption on the first phase of pirarucu grow-out in ponds and cages. |
|
Ano de publicação: |
2023 |
|
Fonte/Imprenta: |
Acta Amazonica, v. 53, n. 1, p. 32-41, 2023. |
|
ISSN: |
1809-4392 |
|
DOI: |
http://dx.doi.org/10.1590/1809-4392202201041 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Pirarucu, Arapaima gigas is a fish species of great social and economic importance in the Amazon region, where they are often farmed in earthen ponds. Intensive cage aquaculture has been growing in Brazil, which could be an alternative means to farm pirarucu, reducing costs and increasing productivity. We evaluated the contribution of natural food organisms in semi-intensive (ponds) and intensive (cages) production systems, and their effect on pirarucu growth and economic performance during the first phase of grow-out. Four ponds (300 m2) and four cages (4.0 m³) were stocked, respectively, with 120 (0.4 fish m-²) and 160 (40 fish m-³) juvenile pirarucu (28.03 ± 6.34 g, 11.75 ± 0.80 cm). The study was conducted for 105 days and fish were fed with commercial feed. Fish growth and plankton intake were evaluated every two weeks. Survival rate, standard length, weight gain and final weight were higher in fish reared in earthen ponds than in cages. Feed conversion of fish kept in ponds was lower (0.96 ± 0.06) than in cages (1.20 ± 0.11). The consumption of natural food organisms was observed, despite artificial feed being fed in both systems. The relative abundance of zooplankton and insects in stomachs was directly proportional to fish weight gain in ponds, and inversely proportional in cages. Higher economic efficiency rate and lower average production cost were calculated for earthen ponds. Our results indicate that the cost-benefit of the first phase grow out of A. gigas is better in earthen ponds. MenosPirarucu, Arapaima gigas is a fish species of great social and economic importance in the Amazon region, where they are often farmed in earthen ponds. Intensive cage aquaculture has been growing in Brazil, which could be an alternative means to farm pirarucu, reducing costs and increasing productivity. We evaluated the contribution of natural food organisms in semi-intensive (ponds) and intensive (cages) production systems, and their effect on pirarucu growth and economic performance during the first phase of grow-out. Four ponds (300 m2) and four cages (4.0 m³) were stocked, respectively, with 120 (0.4 fish m-²) and 160 (40 fish m-³) juvenile pirarucu (28.03 ± 6.34 g, 11.75 ± 0.80 cm). The study was conducted for 105 days and fish were fed with commercial feed. Fish growth and plankton intake were evaluated every two weeks. Survival rate, standard length, weight gain and final weight were higher in fish reared in earthen ponds than in cages. Feed conversion of fish kept in ponds was lower (0.96 ± 0.06) than in cages (1.20 ± 0.11). The consumption of natural food organisms was observed, despite artificial feed being fed in both systems. The relative abundance of zooplankton and insects in stomachs was directly proportional to fish weight gain in ponds, and inversely proportional in cages. Higher economic efficiency rate and lower average production cost were calculated for earthen ponds. Our results indicate that the cost-benefit of the first phase grow out of A. gigas is be... Mostrar Tudo |
|
Palavras-Chave: |
Sistema de produção intensivo; Sistema de produção semi-intensivo. |
|
Thesagro: |
Consumo Alimentar; Peixe; Pirarucu; Sistema de Produção. |
|
Thesaurus Nal: |
Arapaima gigas; Economic productivity; Food consumption; Production costs. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/246043/1/aa-2023.pdf
|
|
Marc: |
LEADER 02536naa a2200325 a 4500
001 2150919
005 2023-02-13
008 2023 bl uuuu u00u1 u #d
022 $a1809-4392
024 7 $ahttp://dx.doi.org/10.1590/1809-4392202201041$2DOI
100 1 $aOLIVEIRA, H. J. B. de
245 $aEffect of natural food consumption on the first phase of pirarucu grow-out in ponds and cages.$h[electronic resource]
260 $c2023
520 $aPirarucu, Arapaima gigas is a fish species of great social and economic importance in the Amazon region, where they are often farmed in earthen ponds. Intensive cage aquaculture has been growing in Brazil, which could be an alternative means to farm pirarucu, reducing costs and increasing productivity. We evaluated the contribution of natural food organisms in semi-intensive (ponds) and intensive (cages) production systems, and their effect on pirarucu growth and economic performance during the first phase of grow-out. Four ponds (300 m2) and four cages (4.0 m³) were stocked, respectively, with 120 (0.4 fish m-²) and 160 (40 fish m-³) juvenile pirarucu (28.03 ± 6.34 g, 11.75 ± 0.80 cm). The study was conducted for 105 days and fish were fed with commercial feed. Fish growth and plankton intake were evaluated every two weeks. Survival rate, standard length, weight gain and final weight were higher in fish reared in earthen ponds than in cages. Feed conversion of fish kept in ponds was lower (0.96 ± 0.06) than in cages (1.20 ± 0.11). The consumption of natural food organisms was observed, despite artificial feed being fed in both systems. The relative abundance of zooplankton and insects in stomachs was directly proportional to fish weight gain in ponds, and inversely proportional in cages. Higher economic efficiency rate and lower average production cost were calculated for earthen ponds. Our results indicate that the cost-benefit of the first phase grow out of A. gigas is better in earthen ponds.
650 $aArapaima gigas
650 $aEconomic productivity
650 $aFood consumption
650 $aProduction costs
650 $aConsumo Alimentar
650 $aPeixe
650 $aPirarucu
650 $aSistema de Produção
653 $aSistema de produção intensivo
653 $aSistema de produção semi-intensivo
700 1 $aLIMA, A. F.
700 1 $aLAPA, L. C. F. da
700 1 $aOLIVEIRA, H. J. B. de
700 1 $aMATOS, F. T. de
700 1 $aNUÑER, A. P. de O.
773 $tActa Amazonica$gv. 53, n. 1, p. 32-41, 2023.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Pesca e Aquicultura (CNPASA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Cerrados. |
|
Data corrente: |
02/04/2002 |
|
Data da última atualização: |
02/04/2002 |
|
Autoria: |
SANO, E. E.; JIAGUO QI; HUETE, A. R.; MORAN, M. S. |
|
Título: |
The use of SAR/TM synergy for estimating soil moisture content over a semi-arid rangeland. |
|
Ano de publicação: |
1998 |
|
Fonte/Imprenta: |
In: LATINO-AMERICAN SEMINAR ON RADAR REMOTE SENSING, 2., 1998, Santos,SP. Proceedings. [S.l.: s.n], 1998. |
|
Páginas: |
p. 175-183. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The C-band ERS-1 SAR data were combined with the Landsat TM data to improve the soil moisture estimates in a semiarid region. The SAR data were compared with the soil moisture measurements at three conditions: a) Without any correction for soil roughness and vegetation effects; b) corrected for soil roughnesseffects; and c) corrected for both soil roughness and vegetation effects. The soil roughness effects were taken into account by using a dry season SAR image. The vegetation influence was considered by using na empirical relationship between SAR and leaf area index data, the latter being derived from TM images. Results indicated that the contribution of soil roughness and vegetation in the radar backscatter were significant and they must be taken into account to accurate soil moisture estimations. |
|
Palavras-Chave: |
Regiao semi-arida. |
|
Thesagro: |
Sensoriamento Remoto; Umidade do Solo. |
|
Thesaurus NAL: |
remote sensing; semiarid zones; soil water content. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01540naa a2200241 a 4500
001 1564593
005 2002-04-02
008 1998 bl uuuu u00u1 u #d
100 1 $aSANO, E. E.
245 $aThe use of SAR/TM synergy for estimating soil moisture content over a semi-arid rangeland.
260 $c1998
300 $ap. 175-183.
520 $aThe C-band ERS-1 SAR data were combined with the Landsat TM data to improve the soil moisture estimates in a semiarid region. The SAR data were compared with the soil moisture measurements at three conditions: a) Without any correction for soil roughness and vegetation effects; b) corrected for soil roughnesseffects; and c) corrected for both soil roughness and vegetation effects. The soil roughness effects were taken into account by using a dry season SAR image. The vegetation influence was considered by using na empirical relationship between SAR and leaf area index data, the latter being derived from TM images. Results indicated that the contribution of soil roughness and vegetation in the radar backscatter were significant and they must be taken into account to accurate soil moisture estimations.
650 $aremote sensing
650 $asemiarid zones
650 $asoil water content
650 $aSensoriamento Remoto
650 $aUmidade do Solo
653 $aRegiao semi-arida
700 1 $aJIAGUO QI
700 1 $aHUETE, A. R.
700 1 $aMORAN, M. S.
773 $tIn: LATINO-AMERICAN SEMINAR ON RADAR REMOTE SENSING, 2., 1998, Santos,SP. Proceedings. [S.l.: s.n], 1998.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Cerrados (CPAC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
