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Title: | Stocking density effect on growth homogeneity of juvenile pirarucu in confined environments |
Other Titles: | Efeito da densidade de estocagem na homogeneidade do crescimento de juvenis de pirarucu em ambiente confinado |
Authors: | Cavero, Bruno Adan Sagratzki Pereira Filho, Manoel Roubach, Rodrigo Ituassú, Daniel Rabello Gandra, André Lima Crescêncio, Roger |
Keywords: | Arapaima Gigas |
Issue Date: | 2003 |
metadata.dc.publisher.journal: | Pesquisa Agropecuaria Brasileira |
metadata.dc.relation.ispartof: | Volume 38, Número 1, Pags. 103-107 |
Abstract: | The objective of this work was to evaluate the stocking density over fish growth homogeneity of pirarucu (Arapaima gigas) juveniles in small volumes cages. Twelve 1 m3 net-cages were used in a 120 m2 earth pond consisting of three treatments (15, 20 and 25 fish/m3) with four repetitions each. Fish were stocked with an initial mean weight of 10.1±0.3 g and homogeneous distributed (p>0.05) between treatments. Coefficient of variation for growth and condition factor did not present significant (p>0.05) differences, contrary to consumption and apparent feed conversion (p<0.05). Consumption was inversely proportional to the increment of density, indicating that stockings densities increases are favorable to a better feed use. There were not any observed behavior differences between treatments. Juveniles pirarucu growth was not influenced by the stocking density or intra-specifics interactions. |
metadata.dc.identifier.doi: | 10.1590/S0100-204X2003000100014 |
Appears in Collections: | Artigos |
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