This study evaluated the efficacy of ALA,and LAC in weaned piglets.The study was conducted with one hundred seventy five
[(Yorkshire X Landrace) X Duroc] weaned piglets in a 33 d feeding trial,and one of five diets:1) CON (basal diet,no antibiotic); 2)ALA05 (CON+0.5 g ALA/kg of diet); 3)ALA10 (CON+1 g ALA/kg of diet); 4) LAC05 (CON+0.5 g LAC/kg of diet); 5) LAC10 (CON+1 g LAC/kg of diet).All data were statistically analyzed using the PROC MIXED procedure of SAS.