Densidade de estocagem do híbrido pintado amazônico (Pseudoplatystoma tigrinum fêmea x Leiarius marmoratus macho) em viveiros escavados

• Autor(a) principal: GOMIDES, Pedro Fellipe Vieira
• Data de Publicação: 2011
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/00130000012qs
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tde/867
• topic: piscicultura; crescimento; bagre yaque; surubim; fish culture; growth; yaque catfish; surubim; CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA::PRODUCAO ANIMAL

In order to determine the stocking density for hybrid amazon pintado (Pseudoplatystoma tigrinum female x Leiarius marmoratus male) were distributed in 12 ponds, 570 juveniles with initial average weight of 82 g. The ground ponds of 50 m2 has minimum and maximum depth of 0.9 and 1.3 m. Different stocking densities were studied 0.5; 0.8; 1.1 e 1.4 fish/m2 during 270 days. The completely randomized design with four treatments and three replicates, each pond was an experimental unit, and the number of fish per pond varied according to treatments. The variables studied were: water quality, productive performance, biometric indices, glucose and economic evaluation. For statistical analysis, data were subjected to analysis of variance with the statistical program SAS ® (2000), in case of statistical difference was used the Tukey test (5%). Was performed polynomial regression for the different densities. The greatest total weight and weight gain was obtained for the lower density. There was a negative linear regression for body weight, weight gain and feed intake with increasing density. Water quality and physiological characteristics of the amazon pintado were not affected by stocking density. It can be concluded, based on performance and economic profitability , the best stocking density for hybrid Amazon pintado that was 0.8 fish/m2.