Interaction of dietary garlic (Allium sativum), onion (Allium cepa), and probiotic on the growth performance and health status of juvenile rainbow trout (Oncorhynchus mykiss)

Eight-week feeding trial was conducted to estimate the effects of dietary probiotic (P), garlic (G), and onion (O) powders on growth, hematology, and serum parameters in the juvenile rainbow trout ( Oncorhynchus mykiss ). Seven practical diets were formulated to be isonitrogenous (49% protein) and isolipidic (20% lipid) and the diets included the P, O, and G at the concentrations of 0.1, 1, and 1%, respectively, at the replace of wheat flour. Rainbow trout fed the G supplemented diet displayed a higher specific growth rate (SGR) when compared with fish fed the P and the mix of probiotics and onion (PO) ( P