| Journal: | Boletim do Instituto de Pesca |
| Database: | PERIÓDICA |
| System number: | 000350960 |
| ISSN: | 0046-9939 |
| Authors: | Scorvo-Filho, Joao Donato1 Romagosa, Elizabeth1 Ayroza, Luiz Marques da Silva2 Frasca-Corvo, Celia Maria Doria1 |
| Institutions: | 1Agencia Paulista de Tecnologia dos Agronegocios, Instituto de Pesca, Sao Paulo. Brasil 2Agencia Paulista de Tecnologia dos Agronegocios, Polo Regional de Desenvolvimento Tecnologico dos Agronegocios do Medio Paranapanema, Araras, Sao Paulo. Brasil |
| Year: | 2008 |
| Volumen: | 34 |
| Number: | 2 |
| Pages: | 181-188 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | The objective of this study was to analyze the zootechnical performance of Pseudoplatystoma corruscans juvenile, reared in intensive (2.25m³ net-cages – NC- with 20mm mesh) and semi-intensive (600m² earthen ponds - EP) systems with three treatments and nine repetitions, in the Vale do Ribeira, in the town of Pariquera-Açu, Sao Paulo, Brazil between October 2002 to July 2003: Treatment 1 (T1) = 67 fish/m³, a total of 451 fish/pond –three net-cages placed in a pond (EP); Treatment 2 (T2) = 133 fish/m³, a total of 900 fish/pond – three net-cages placed in a pond (EP); Treatment 3 (T3) = 0.75 fish/m², a total of 450 fish/pond. Each net-cage (treatments T1 and T2), and each pond (treatment T3) was regarded as a repetition. The fish, with initial mean weight and length of 73.82g and 23.21cm for T1; 72.96g and 23.10cm for T2, and 73.14g and 22.99cm for T3 were fed daily extruded feed (40% crude protein). The fishes received three servings of the ration of 4.0mm of diameter in the Phase I (60 days), 5 to 10% of the live weight and in the Phases II (120 days, 6.0mm) and III (93 days, 8.0mm), the fish were fed in two servings, the quantity ranging from 5-3% and 3-1% in Phases II and III. At the end of the studied period, the fish presented the following mean values: final mean weight and length: 712.49g and 45.10cm for T1; 852.13g and 46.33cm for T2; 1,179.17g and 53.72cm for T3. Daily mean weight gain: 2.34g for T1; 2.85g for T2, and 4.05g for T3. Final total biomass: 223.01g for T1; 541.10g for T2, and 384.40g for T3. Apparent feed conversion: 5.2:1.0 for T01; 5.0:1.0 for T02; 4.6:1.0 for T03. Survival rate: 69.55% for T1; 70.56% for T2; 72.44% for T3. Relative condition factor: 1.01 for T1 and T2, and 1.00 for T3. The T3 were significantly different from the other treatments (P≥0.001). The physical and chemical parameters analyzed were within the acceptable standards for the species. The results of this study, under the conditions it has been carried |
| Portuguese abstract | O objetivo deste estudo foi o de analisar o desempenho zootécnico de juvenis de pintado, Pseudoplatystoma corruscans, criados em dois sistemas, intensivo (tanques-rede, TR) e semi-intensivo (viveiros escavados, VE), com três tratamentos e nove repetições, na região do Vale do Ribeira, SP, durante out./02 a jul./03: Tratamento 1 (T1) = 67 peixes/m3, {total de 450 peixes/VE – 03 TR dispostos em um VE}; Tratamento 2 (T2) = 133 peixes/m3, {total de 900 peixes/VE – 03TR dispostos em um VE}; Tratamento 3 (T3) = 0,75 peixes/m2, {total de 450 peixes/VE}. Cada TR, no caso dos tratamentos T1 e T2, e cada VE, no caso do tratamento T3, foi considerado uma repetição. Os peixes, com médias de peso e comprimento inicial de 73,82 g e 23,21 cm (T01); 72,96 g e 23,10 cm (T02) e 73,14 g e 22,99 cm (T03), foram alimentados com ração extrusada (40%proteína bruta). Na Fase I (60 dias) foram dadas 03 porções diárias com 4,0 mm de diâmetro, 5-10% do peso vivo e nas Fases II (120 dias, 6,0 mm) e III (93 dias, 8,0 mm), 02 porções variando de 5-3% e 3-1%, nas respectivas fases. As médias finais de peso e comprimento final foram de: 712,49 g e 45,10 cm (T1); 852,13 g e 46,33 cm (T2) e 1.179,17 g e 53,72 cm (T3); GPMD: 2,34 g (T1); 2,85 g (T2) e 4,05 g (T3); BTf: 223,01 g (T1); 541,10 g (T2) e 384,40 g (T3); CAA: 5,2:1,0 (T1); 5,0:1,0 (T2) e 4,6:1,0 (T3); sobrevivência: 69,55% (T1); 70,56% (T2) e 72,44% (T3). O T3 demonstrou diferença significativa dos demais (P<0,001). Os parâmetros físicos e químicos analisados estiveram dentro dos padrões aceitáveis. O resultado deste estudo, nas condições em que foi conduzido, mostra que o pintado apresentou um melhor desempenho produtivo, quando criado em viveiros escavados |
| Disciplines: | Medicina veterinaria y zootecnia |
| Keyword: | Pesca, Cultivo de peces, Densidad de siembra, Juveniles, Desempeño productivo, Pseudoplatystoma corruscans, Pimelodidae |
| Keyword: | Veterinary medicine and animal husbandry, Fisheries, Fish culture, Stocking density, Juveniles, Productive performance, Pseudoplatystoma corruscans, Pimelodidae |
| Full text: | Texto completo (Ver PDF) |
