Suplementação alimentar com extrato de maracujá em juvenis de tilápia-do-nilo cultivados em condições térmicas subótimas

• DOI: https://doi.org/10.22533/at.ed.9461126210110

• Palavras-chave: Oreochromis niloticus; aditivos alimentares; extrato de maracujá; índices corporais; desempenho zootécnico; homeostase

• Keywords: Oreochromis niloticus; feed additives; passion fruit extract; body indices; growth performance; homeostasis.

• Abstract: This chapter evaluated the effects of dietary passion fruit extract supplementation on water quality, zootechnical performance, body indices, and hematological parameters of juvenile Nile tilapia (Oreochromis niloticus) reared in a recirculating aquaculture system (RAS) under suboptimal thermal conditions. Fish were allocated into two experimental groups, a control group and a group supplemented with passion fruit extract, and fed for 65 days. At the end of the experimental period, passion fruit extract supplementation at the tested concentration did not promote significant differences in water quality parameters, growth performance, hepatosomatic and viscerosomatic indices, or hematological profile. On the other hand, the absence of physiological and hematological alterations suggests that the extract did not impair fish health or homeostasis throughout the experimental period. Therefore, the findings contribute to the current knowledge regarding the use of phytogenic feed additives in Nile tilapia nutrition and provide evidence of the safety of passion fruit extract supplementation under suboptimal thermal rearing conditions.