Growth, yield, water and effluent quality in ponds with different management during tambaqui juvenile production

Pesquisa Agropecuária Brasileira

Ana Maria Dias Da Silva²  Levy De Carvalho Gomes¹  Rodrigo Roubach² 

[1] ,Instituto Nacional de Pesquisas da AmazôniaManaus AM ,Brazil

关键词: Colossoma macropomum;    growth;    yield;    diet;    environmental impact;    Colossoma macropomum;    crescimento;    produtividade;    alimentação;    impacto ambiental;   

DOI  :  10.1590/S0100-204X2007000500017

来源: SciELO

【 摘 要 】

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.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License