A performancetrial was carried out to evaluate sugar cane yeast, (Saccharomyces spp.)dried by spray-dryer (SCYSD), on growing-finishing pigs feeding. Thirty-twocrossbreed growing pigs, half of each sex, with an average initial live weightof 26.1 kg. The piglets were fed ad libitum, with diets at increasinglevels (0, 7, 14 and 21%) of SCYSD. A randomized blocks experimental designwas used, and four levels of inclusion and four replications, with two-pigs/experimentalunit. Inclusion of SCYSD in the growth phase (26.1-59.7 kg) decreased the feed:gainratio, with no effects on feed intake and daily weight gain. In the finishingphase (59.7-86.0 kg) and in total trial phase (26.1-86.0 kg), no performancecharacteristics were affected. Plasma urea nitrogen (PUN) decreases linearlywith the increase of SCYSD level in both phases. A quadratic effect on thicknessbackfat and a linear improvement on meat:fat ratio were observed with increasinglevels of SCYSD in the diets. Results suggest that SCYSD may be used up to 21%on growing-finishing pig diets, without impairing their daily weight gain.
