2004
DOI: 10.1590/s1516-35982004000100004
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Freqüência de arraçoamento para alevinos de lambari do rabo-amarelo (Astyanax bimaculatus)

Abstract: RESUMO -Este experimento foi realizado em um período de 30 dias, objetivando determinar a freqüência de arraçoamento (FA) ideal para o melhor desempenho de alevinos de lambari do rabo-amarelo (Astyanax bimaculatus). Foram utilizados 120 alevinos de lambari com peso vivo inicial de 0,34 ± 0,01 g, distribuídos em 12 tanques-rede experimentais, em um delineamento em blocos inteiramente casualizados, com quatro tratamentos e três repetições. Cada bloco correspondia a uma caixa de fibrocimento de 1000 L contendo qu… Show more

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Cited by 41 publications
(46 citation statements)
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“…The uniformity of batches of fish in the ornamental fish farming, especially in length, facilitates the handling of individuals in the production system and outlets for marketing, since for these species it takes into account the length of the fish, as well as their unit value. Heterogeneous batches result in greater competition between individuals, which can lead to the formation of hierarchies (Hayashi et al, 2004). In this case, the dominant fish can consume most of the food, which can lead to increased mortality of minors whether by competition for space or by competition for food provided.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The uniformity of batches of fish in the ornamental fish farming, especially in length, facilitates the handling of individuals in the production system and outlets for marketing, since for these species it takes into account the length of the fish, as well as their unit value. Heterogeneous batches result in greater competition between individuals, which can lead to the formation of hierarchies (Hayashi et al, 2004). In this case, the dominant fish can consume most of the food, which can lead to increased mortality of minors whether by competition for space or by competition for food provided.…”
Section: Resultsmentioning
confidence: 99%
“…Thus, in ornamental fish culture, good management practices during this phase provide better uniformity of batches, which facilitates the handling of fish in the production system and outlets for marketing. On the other hand, heterogeneous batches resulting in greater competition between individuals could lead to the formation of hierarchies (Hayashi et al, 2004) and increased mortality.…”
Section: Introductionmentioning
confidence: 99%
“…Os peletes foram moídos para adequação dos mesmos ao tamanho da boca dos alevinos. A freqüência de arraçoamento dos alevinos foi feita de acordo com Hayashi et al (2004), quatro vezes ao dia às 8, 11, 14 e 17 h.…”
Section: Methodsunclassified
“…Ao contrário do verificado com o trairão, Hayashi et al (2004) relataram efeito do manejo alimentar nas taxas de sobrevivência do lambari do rabo-amarelo (Astyanax bimaculatus), em que os melhores resultados foram encontrados com as freqüências de duas e quatro vezes ao dia. Os autores relataram também que maiores freqüências de alimentação, como seis e oito vezes ao dia, podem resultar em disputa pelo alimento fornecido em pequenas quantidades, prejudicando a sobrevivência.…”
Section: Tce -Taxa De Crescimento Específico (Sgr -Specific Growth Raunclassified