Experimental design, animal and diets
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