Fishmeal replacement and its effects on nutrition and the physiology of Penaeus vannamei shrimp juveniles

The replacement of fishmeal with plant protein sources has been studied in Penaeus vannamei. However, it only from the point view replacement, forgetting integral role that plays nutrition shrimp. This study aimed to determine if a supplement dietary phosphorus can sustain by blend feedstuffs, betaine and tauren as attractants still supporting homeostasis, growth, digestive enzymes, lipid-soluble antioxidant systems at normal levels juveniles P. A standard feed (25% fishmeal) for juvenile vannamei was partially replaced mix ingredients (soybean canola paste, soy concentrate, wheat meal). These feedstuffs were supplemented amino acids (MET, LYS, TAU) plus microencapsulated exogenous phytase, betaine, dicalphosphate. (2.56 g) maintained 100 L fiber tanks 70 days. Biomass significantly affected treatments (P < 0.05), being better diet comparable commercial feed. No significant changes observed blood parameters. Muscle superoxide dismutase activity diets 0.05). There adaptive homeostasis remained stable. Fishmeal may depend on supplementation taurine soluble phosphorus, not performance but flesh quality, here, shear strength shrimp muscle within acceptable value (69-81 mJ).