Densidade de estocagem do híbrido pintado amazônico (Pseudoplatystoma tigrinum fêmea x Leiarius marmoratus macho) em viveiros escavados
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Data
2011-08-01
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Universidade Federal de Goiás
Resumo
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.
Descrição
Palavras-chave
piscicultura , crescimento , bagre yaque , surubim , fish culture , growth , yaque catfish , surubim
Citação
GOMIDES, Pedro Fellipe Vieira. Stocking density for hybrid amazon pintado (Pseudoplatystoma tigrinum female x Leiarius marmoratus male) in ground ponds. 2011. 59 f. Dissertação (Mestrado em Ciências Agrárias - Veterinaria) - Universidade Federal de Goiás, Goiânia, 2011.