The control group (CON) was fed with non-supplemented feed; SBY group received feed supplemented with 1x107 CFU g-1 of Saccharomyces boulardii (Floratil®, Merck) grown in Yeast Peptone Dextrose medium (YPD, Difco, USA); PPE group was fed with feed supplemented with 1x107 CFU g-1 of P. pastoris X-33 (Invitrogen®, USA) grown in an effluent from the tanks of parboiling rice industry to which 15 g.L-1 of glycerol by-product from the biodiesel industry was added [19 (link)], and PPY group with feed supplemented with 1x107 CFU g-1 of P. pastoris X-33 grown in YPD.
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