Although there are relatively few studies about the application of LAB in sows, it is very important
to conduct research in this field. In a recent study, the effects of L. johnsonii XS4 (control group
received basal diet and experiment group received the same diet supplemented with L. johnsonii XS4,
from 90th day of pregnancy to the weaning day at 25th day of lactation) on reproductive performance,
gut environment,