Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/126203
Unidade da Embrapa/Coleção:: Área de Informação da Sede - Artigo em periódico indexado (ALICE)
Data do documento: 14-Jan-2008
Tipo do Material: Artigo em periódico indexado (ALICE)
Autoria: SILVA, A. M. D. da
GOMES, L. de C.
ROUBACH, R.
Informaçães Adicionais: Embrapa Amazônia Ocidental.
Título: Growth, yield, water and effluent quality in ponds with different management during tambaqui juvenile production
Edição: 2007
Fonte/Imprenta: Pesquisa Agropecuária Brasileira, Brasília, v. 42, n.5, p. 733-740, maio 2007
Idioma: en
Palavras-chave: growth
yield.
Conteúdo: The objective of this work was to evaluate the effect of pond management on fish feed, growth, yield, survival, and water and effluent quality, during tambaqui (Colossoma macropomum) juvenile production. Fish were distributed in nine 600 m2 earthen ponds, at a density of 8 fish per m2; the rearing period was 60 days. Three different pond management were applied: limed and fertilized (LimFer), limed (Lim), and natural (Nat). Fish were fed with a commercial ration containing 34% crude protein three times daily. There were no significant differences in fish growth or yield. Three main items found in tambaqui stomach were insect, zooplankton and ration, without a significant difference among treatments in proportion. Alkalinity, hardness, and CO2 were greater in LimFer and Lim ponds. Chlorophyll a, transparency, ammonia, nitrite, temperature, and dissolved oxygen of pond water were not significantly different among treatments. Biochemical oxygen demand, total phosphorus, orthophosphate, ammonia, and nitrite were significantly greater in effluents from LimFer ponds. Pond fertilization should be avoided, because growth and yield were similar among the three pond management systems tested; besides, it produces a more impacting effluent.
Thesagro: Alimentação
Colossoma Macropomum
Crescimento
Impacto Ambiental
Produtividade.
NAL Thesaurus: environmental impact.
diet
Ano de Publicação: 2007
Aparece nas coleções:Artigo em periódico indexado (AI-SEDE) / Embrapa Informação Tecnológica (SCT)

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