Ninety [(Duroc×Yorkshire)×Landrace] pigs (average
initial BW of 39.75±1.97 kg) were used in this 42 days
growth trial. At the start of the experiment, pigs were
allotted on the basis of initial BW to three dietary
treatments by a randomized complete block design. There
were five replications pens per treatment with 6 pigs per
pen. Dietary treatments included: 1) CON (basal diet); 2)
CP1 (basal diet+complex probiotic 0.1%) and 3) CP2 (basal
diet+complex probiotic 0.2%). The components of complex
probiotic are Lactobacillus acidophilus 1.0×107 CFU/g,
Saccharomyces cerevisae 4.3×106 CFU/g and Bacillus
subtilis 2.0×106 CFU/g. Diets used in this experiment met
or exceeded NRC (1998) recommendations for all nutrients
regardless of treatment (Table 1). Through all the
experimental period, pigs were allowed ad libitum access to
feed and water through a self-feeder and nipple waterer.