Influ那ncia de duas dietas na qualidade da 芍gua dos tanquesber 芍rio, utilizados no cultivo do camar o marinho Litopenaeus vannamei (Boone, 1931)

作者：Adriano Prysthon da Silva; Paulo de Paula Mendes

来源：Acta Scientiarum - Animal Sciences, 2006.

• artemia
• ber ario
• camar o
• eutrofiza o
• artemia
• nursery tank
• shrimp
• eutrophication

Cultivos experimentais com p車s-larvas do Litopenaeus vannamei, na fase de ber 芍rio, foram realizados em uma fazenda de camar o, objetivando avaliar a influ那ncia da utiliza o de duas dietas na qualidade f赤sico-qu赤mica das 芍guas residuais. As dietas foram formuladas 角 base de ra o comercial e n芍uplios de art那mia, denominadas MAC e MAA, respectivamente. Foram utilizadas p車s-larvas no est芍gio (PL19), estocadas a 16PL/L em dois tanques-ber 芍rio de 60 m3. Ao final de 10 dias de cultivo, as concentra es dos compostosnitrogenados (am nia, nitrito e nitrato) e fosfatados (f車sforo total e ortofosfatos) dos tanquesber 芍rio foram menores na dieta MAA do que na MAC (p%26lt;0,05). Conseq邦entemente, a dieta MAA induziu menores taxas de incremento di芍rio desses compostos, contribuindo com uma redu o significativa dos nutrientes respons芍veis pela eutrofiza o da 芍gua. Experiments were carried out in a commercial marine shrimp farm in order to evaluate the use of two diets in Litopenaeus vannamei post-larvae, during nursery phase, on physiochemical wastewater quality. Two feeding methods were adopted: Commercial Feeding Method (MAC) and Artemia Feeding Method (MAA). The nursery tanks (60 m3) were provided with 19 days post-larvae (PL19) with a stocking density of 16PL/liter. After 10 days of culture, the concentrations of nitrogen (ammonia, nitrite and nitrate) and phosphorus compounds (total phosphorus and orthophosphate) in the nursery tank were smaller for MAC, rather than MAA treatment (p%26lt;0.05). Consequently, MAA treatment induced low levels of daily compounds increment,thus contributing to a significant reduction of the nutrients that caused water eutrophication.