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Description de l’éditeur
INTRODUCTION Hormones, antibiotics and several other chemicals have been tested as growth promoters, antibacterial and for other purposes in aquatic animals (Jayaprakas and Sambhu, 1996; Masahiro, 1999), but their use in aquatic animal production cannot be recommended due to the residual effects in the muscle of fish as well as prawns. Plants are natural sources of safer and cheaper chemicals. Plant products have been reported to promote various activities like antistress, growth promotion, appetite stimulation and immunostimulation in aquaculture practices (Citarasu et al., 2001, 2002; Sivaram et al., 2004).