USO DE ENZIMAS EXÓGENAS EM DIETAS PARA JUVENIS DE PAMPO Trachinotus marginatus: CRESCIMENTO E MORFOFIOLOGIA DO FÍGADO E INTESTINO
DOI:
https://doi.org/10.20950/1678-2305.2018.44.4.326Palavras-chave:
carboidrases, crescimento, fitase, proteaseResumo
Este estudo investigou o uso de enzimas exógenas em dietas para juvenis de pampo prateado Trachinotus marginatus. Foram preparadas seis dietas (43% de proteína, 8% de lipídio), contendo 0 (TC), 25 (T25), 50 (T50), 100 (T100), 250 (T250) e 500 (T500) mg kg-1 do complexo enzimático Rovabio ® Max AP. Avaliou-se os efeitos sobre o crescimento, composição de carcaça, níveis de glicogênio e triglicerídeo no fígado e possíveis alterações na morfologia do intestino e fígado. Os resultados mostraram diferença significativa (p < 0,05) no desempenho de crescimento dos peixes dos tratamentos T100, T250 e T500, com grande concentração de triglicerídeos e alteração na morfologia do fígado nos peixes dos tratamentos T250 e T500. A concentração de cálcio nos ossos também teve um aumento significativo (p < 0,05) nos peixes dos tratamentos T50, T100 e T250 em relação ao controle. Entretanto, não houve diferença significativa (p > 0,05) na composição de carcaça, morfologia do intestino e concentração de glicogênio no fígado.Esses resultados indicam que o uso de 100 mg kg-1 de enzimas na dieta mostrou ser o melhor nível de inclusão para juvenis de pampo prateado, favorecendo o crescimento e a concentração de cálcio nos ossos. Sem efeitos significativos sobre os níveis de triglicerídeos no fígado
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