Thirtytwo sows were included in the trial. They were divided into the experimental group (n = 16) and a control group (n = 16). The experimental group received 1.28 × 106Bacillus subtilis and Bacillus licheniformis per gram of feed (400 ppm BioPlus 2B, Chr. Hansen, Denmark). The trial started 2 weeks before farrowing and lasted until weaning. No significant differences were revealed in the number of piglets born alive, stillborn or the number of weaned pigs between the two groups of sows. The wean-to-first service interval was not significantly different between the groups, but sows in the experimental group had earlier first services. The conception rate did not differ. Sows in the experimental group suffered from postpartum dysgalactia syndrome (PDS) less than sows in the control group. The suckling piglets in the experimental group of sows reached better weight on day 14 of the trial and this state persisted up to the end of the experiment. The differences in the weights of the experimental group and the control group were significant at the end of the trial (P < 0.01). The experimental piglets had significantly lower incidence of diarrhoea than those in the control group (P < 0.05).
