Otimização da taxa de alimentação do camarão-branco-do-pacífico em sistema de bioflocos na fase de berçário

Autores

DOI:

https://doi.org/10.20950/1678-2305/bip.2024.50.e895

Palavras-chave:

Pós-larva, Penaeus vannamei, Manejo alimentar, Sistemas de bioflocos

Resumo

Realizou-se um experimento de 45 dias para otimizar as taxas de alimentação na fase de berçário do camarão-brancodo- pacífico em sistemas de bioflocos (BFT). Quatro tratamentos foram avaliados em quadruplicata: taxa máxima de alimentação de acordo com a tabela Van Wyk; taxa mínima de alimentação de acordo com a tabela Van Wyk; taxa mínima -10% de alimentação de acordo com a tabela Van Wyk; e taxa máxima +10% de alimentação de acordo com a tabela Van Wyk. As pós-larvas (0,08 ± 0,00 g) foram cultivadas na densidade de 2.000 camarões·m-3, e qualidade da água, produção de sólidos e desempenho produtivo foram monitorados. Não houve diferença significativa no peso médio final (1,47 ± 0,17 g), produtividade (2,34 ± 0,20 kg·m-3) e sobrevivência (85,29 ± 5,44%), mas o fator de conversão alimentar foi significativamente menor em taxa mínima de alimentação e taxa mínima -10% de alimentação, indicando uma conversão alimentar eficiente sem prejudicar o crescimento. Esses tratamentos resultaram em menores valores de compostos nitrogenados tóxicos e sólidos suspensos totais, sugerindo um impacto positivo na qualidade da água. Embora essas taxas tenham sido adequadas, destaca-se a necessidade de ajustes contínuos por causa das variações no sistema BFT. Este estudo contribui para a otimização do manejo alimentar em sistemas de berçário superintensivos em BFT.

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2024-05-24

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